127943920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2861}}^1$

素因数の和:2930

約数の個数: 80

約数和(自身を含む): 327916512

約数和(自身を除く): 199972592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 1040, 1118, 1720, 2236, 2795, 2861, 3440, 4472, 5590, 5722, 8944, 11180, 11444, 14305, 22360, 22888, 28610, 37193, 44720, 45776, 57220, 74386, 114440, 123023, 148772, 185965, 228880, 246046, 297544, 371930, 492092, 595088, 615115, 743860, 984184, 1230230, 1487720, 1599299, 1968368, 2460460, 2975440, 3198598, 4920920, 6397196, 7996495, 9841840, 12794392, 15992990, 25588784, 31985980, 63971960, 127943920]

約数ペア:

[(1, 127943920), (2, 63971960), (4, 31985980), (5, 25588784), (8, 15992990), (10, 12794392), (13, 9841840), (16, 7996495), (20, 6397196), (26, 4920920), (40, 3198598), (43, 2975440), (52, 2460460), (65, 1968368), (80, 1599299), (86, 1487720), (104, 1230230), (130, 984184), (172, 743860), (208, 615115), (215, 595088), (260, 492092), (344, 371930), (430, 297544), (520, 246046), (559, 228880), (688, 185965), (860, 148772), (1040, 123023), (1118, 114440), (1720, 74386), (2236, 57220), (2795, 45776), (2861, 44720), (3440, 37193), (4472, 28610), (5590, 22888), (5722, 22360), (8944, 14305), (11180, 11444)]