1405321520

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{222361}}^1$

素因数の和:222453

約数の個数: 40

約数和(自身を含む): 3308746560

約数和(自身を除く): 1903425040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 222361, 444722, 889444, 1111805, 1778888, 2223610, 3557776, 4447220, 8894440, 17566519, 17788880, 35133038, 70266076, 87832595, 140532152, 175665190, 281064304, 351330380, 702660760, 1405321520]

約数ペア:

[(1, 1405321520), (2, 702660760), (4, 351330380), (5, 281064304), (8, 175665190), (10, 140532152), (16, 87832595), (20, 70266076), (40, 35133038), (79, 17788880), (80, 17566519), (158, 8894440), (316, 4447220), (395, 3557776), (632, 2223610), (790, 1778888), (1264, 1111805), (1580, 889444), (3160, 444722), (6320, 222361)]