28289360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:133

約数の個数: 160

約数和(自身を含む): 79709184

約数和(自身を除く): 51419824

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 31, 34, 40, 44, 55, 61, 62, 68, 80, 85, 88, 110, 122, 124, 136, 155, 170, 176, 187, 220, 244, 248, 272, 305, 310, 340, 341, 374, 440, 488, 496, 527, 610, 620, 671, 680, 682, 748, 880, 935, 976, 1037, 1054, 1220, 1240, 1342, 1360, 1364, 1496, 1705, 1870, 1891, 2074, 2108, 2440, 2480, 2635, 2684, 2728, 2992, 3355, 3410, 3740, 3782, 4148, 4216, 4880, 5185, 5270, 5368, 5456, 5797, 6710, 6820, 7480, 7564, 8296, 8432, 9455, 10370, 10540, 10736, 11407, 11594, 13420, 13640, 14960, 15128, 16592, 18910, 20740, 20801, 21080, 22814, 23188, 26840, 27280, 28985, 30256, 32147, 37820, 41480, 41602, 42160, 45628, 46376, 53680, 57035, 57970, 64294, 75640, 82960, 83204, 91256, 92752, 104005, 114070, 115940, 128588, 151280, 160735, 166408, 182512, 208010, 228140, 231880, 257176, 321470, 332816, 353617, 416020, 456280, 463760, 514352, 642940, 707234, 832040, 912560, 1285880, 1414468, 1664080, 1768085, 2571760, 2828936, 3536170, 5657872, 7072340, 14144680, 28289360]

約数ペア:

[(1, 28289360), (2, 14144680), (4, 7072340), (5, 5657872), (8, 3536170), (10, 2828936), (11, 2571760), (16, 1768085), (17, 1664080), (20, 1414468), (22, 1285880), (31, 912560), (34, 832040), (40, 707234), (44, 642940), (55, 514352), (61, 463760), (62, 456280), (68, 416020), (80, 353617), (85, 332816), (88, 321470), (110, 257176), (122, 231880), (124, 228140), (136, 208010), (155, 182512), (170, 166408), (176, 160735), (187, 151280), (220, 128588), (244, 115940), (248, 114070), (272, 104005), (305, 92752), (310, 91256), (340, 83204), (341, 82960), (374, 75640), (440, 64294), (488, 57970), (496, 57035), (527, 53680), (610, 46376), (620, 45628), (671, 42160), (680, 41602), (682, 41480), (748, 37820), (880, 32147), (935, 30256), (976, 28985), (1037, 27280), (1054, 26840), (1220, 23188), (1240, 22814), (1342, 21080), (1360, 20801), (1364, 20740), (1496, 18910), (1705, 16592), (1870, 15128), (1891, 14960), (2074, 13640), (2108, 13420), (2440, 11594), (2480, 11407), (2635, 10736), (2684, 10540), (2728, 10370), (2992, 9455), (3355, 8432), (3410, 8296), (3740, 7564), (3782, 7480), (4148, 6820), (4216, 6710), (4880, 5797), (5185, 5456), (5270, 5368)]