20498720

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{613}}^1$

素因数の和:658

約数の個数: 96

約数和(自身を含む): 55702080

約数和(自身を除く): 35203360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 32, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 160, 176, 190, 209, 220, 304, 352, 380, 418, 440, 608, 613, 760, 836, 880, 1045, 1226, 1520, 1672, 1760, 2090, 2452, 3040, 3065, 3344, 4180, 4904, 6130, 6688, 6743, 8360, 9808, 11647, 12260, 13486, 16720, 19616, 23294, 24520, 26972, 33440, 33715, 46588, 49040, 53944, 58235, 67430, 93176, 98080, 107888, 116470, 128117, 134860, 186352, 215776, 232940, 256234, 269720, 372704, 465880, 512468, 539440, 640585, 931760, 1024936, 1078880, 1281170, 1863520, 2049872, 2562340, 4099744, 5124680, 10249360, 20498720]

約数ペア:

[(1, 20498720), (2, 10249360), (4, 5124680), (5, 4099744), (8, 2562340), (10, 2049872), (11, 1863520), (16, 1281170), (19, 1078880), (20, 1024936), (22, 931760), (32, 640585), (38, 539440), (40, 512468), (44, 465880), (55, 372704), (76, 269720), (80, 256234), (88, 232940), (95, 215776), (110, 186352), (152, 134860), (160, 128117), (176, 116470), (190, 107888), (209, 98080), (220, 93176), (304, 67430), (352, 58235), (380, 53944), (418, 49040), (440, 46588), (608, 33715), (613, 33440), (760, 26972), (836, 24520), (880, 23294), (1045, 19616), (1226, 16720), (1520, 13486), (1672, 12260), (1760, 11647), (2090, 9808), (2452, 8360), (3040, 6743), (3065, 6688), (3344, 6130), (4180, 4904)]