20406486880

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{2383}}^1$

素因数の和:2613

約数の個数: 192

約数和(自身を含む): 54501672960

約数和(自身を除く): 34095186080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 65, 80, 92, 104, 115, 130, 160, 179, 184, 208, 230, 260, 299, 358, 368, 416, 460, 520, 598, 716, 736, 895, 920, 1040, 1196, 1432, 1495, 1790, 1840, 2080, 2327, 2383, 2392, 2864, 2990, 3580, 3680, 4117, 4654, 4766, 4784, 5728, 5980, 7160, 8234, 9308, 9532, 9568, 11635, 11915, 11960, 14320, 16468, 18616, 19064, 20585, 23270, 23830, 23920, 28640, 30979, 32936, 37232, 38128, 41170, 46540, 47660, 47840, 53521, 54809, 61958, 65872, 74464, 76256, 82340, 93080, 95320, 107042, 109618, 123916, 131744, 154895, 164680, 186160, 190640, 214084, 219236, 247832, 267605, 274045, 309790, 329360, 372320, 381280, 426557, 428168, 438472, 495664, 535210, 548090, 619580, 658720, 712517, 853114, 856336, 876944, 991328, 1070420, 1096180, 1239160, 1425034, 1706228, 1712672, 1753888, 2132785, 2140840, 2192360, 2478320, 2850068, 3412456, 3562585, 4265570, 4281680, 4384720, 4956640, 5545241, 5700136, 6824912, 7125170, 8531140, 8563360, 8769440, 9810811, 11090482, 11400272, 13649824, 14250340, 17062280, 19621622, 22180964, 22800544, 27726205, 28500680, 34124560, 39243244, 44361928, 49054055, 55452410, 57001360, 68249120, 78486488, 88723856, 98108110, 110904820, 114002720, 127540543, 156972976, 177447712, 196216220, 221809640, 255081086, 313945952, 392432440, 443619280, 510162172, 637702715, 784864880, 887238560, 1020324344, 1275405430, 1569729760, 2040648688, 2550810860, 4081297376, 5101621720, 10203243440, 20406486880]

約数ペア:

[(1, 20406486880), (2, 10203243440), (4, 5101621720), (5, 4081297376), (8, 2550810860), (10, 2040648688), (13, 1569729760), (16, 1275405430), (20, 1020324344), (23, 887238560), (26, 784864880), (32, 637702715), (40, 510162172), (46, 443619280), (52, 392432440), (65, 313945952), (80, 255081086), (92, 221809640), (104, 196216220), (115, 177447712), (130, 156972976), (160, 127540543), (179, 114002720), (184, 110904820), (208, 98108110), (230, 88723856), (260, 78486488), (299, 68249120), (358, 57001360), (368, 55452410), (416, 49054055), (460, 44361928), (520, 39243244), (598, 34124560), (716, 28500680), (736, 27726205), (895, 22800544), (920, 22180964), (1040, 19621622), (1196, 17062280), (1432, 14250340), (1495, 13649824), (1790, 11400272), (1840, 11090482), (2080, 9810811), (2327, 8769440), (2383, 8563360), (2392, 8531140), (2864, 7125170), (2990, 6824912), (3580, 5700136), (3680, 5545241), (4117, 4956640), (4654, 4384720), (4766, 4281680), (4784, 4265570), (5728, 3562585), (5980, 3412456), (7160, 2850068), (8234, 2478320), (9308, 2192360), (9532, 2140840), (9568, 2132785), (11635, 1753888), (11915, 1712672), (11960, 1706228), (14320, 1425034), (16468, 1239160), (18616, 1096180), (19064, 1070420), (20585, 991328), (23270, 876944), (23830, 856336), (23920, 853114), (28640, 712517), (30979, 658720), (32936, 619580), (37232, 548090), (38128, 535210), (41170, 495664), (46540, 438472), (47660, 428168), (47840, 426557), (53521, 381280), (54809, 372320), (61958, 329360), (65872, 309790), (74464, 274045), (76256, 267605), (82340, 247832), (93080, 219236), (95320, 214084), (107042, 190640), (109618, 186160), (123916, 164680), (131744, 154895)]