640204080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{115979}}^1$

素因数の和:116018

約数の個数: 80

約数和(自身を含む): 2070938880

約数和(自身を除く): 1430734800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 460, 552, 690, 920, 1104, 1380, 1840, 2760, 5520, 115979, 231958, 347937, 463916, 579895, 695874, 927832, 1159790, 1391748, 1739685, 1855664, 2319580, 2667517, 2783496, 3479370, 4639160, 5335034, 5566992, 6958740, 8002551, 9278320, 10670068, 13337585, 13917480, 16005102, 21340136, 26675170, 27834960, 32010204, 40012755, 42680272, 53350340, 64020408, 80025510, 106700680, 128040816, 160051020, 213401360, 320102040, 640204080]

約数ペア:

[(1, 640204080), (2, 320102040), (3, 213401360), (4, 160051020), (5, 128040816), (6, 106700680), (8, 80025510), (10, 64020408), (12, 53350340), (15, 42680272), (16, 40012755), (20, 32010204), (23, 27834960), (24, 26675170), (30, 21340136), (40, 16005102), (46, 13917480), (48, 13337585), (60, 10670068), (69, 9278320), (80, 8002551), (92, 6958740), (115, 5566992), (120, 5335034), (138, 4639160), (184, 3479370), (230, 2783496), (240, 2667517), (276, 2319580), (345, 1855664), (368, 1739685), (460, 1391748), (552, 1159790), (690, 927832), (920, 695874), (1104, 579895), (1380, 463916), (1840, 347937), (2760, 231958), (5520, 115979)]