28990000

素因数分解:

$2^4\times 5^4\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:264

約数の個数: 100

約数和(自身を含む): 75925696

約数和(自身を除く): 46935696

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 223, 250, 260, 325, 400, 446, 500, 520, 625, 650, 892, 1000, 1040, 1115, 1250, 1300, 1625, 1784, 2000, 2230, 2500, 2600, 2899, 3250, 3568, 4460, 5000, 5200, 5575, 5798, 6500, 8125, 8920, 10000, 11150, 11596, 13000, 14495, 16250, 17840, 22300, 23192, 26000, 27875, 28990, 32500, 44600, 46384, 55750, 57980, 65000, 72475, 89200, 111500, 115960, 130000, 139375, 144950, 223000, 231920, 278750, 289900, 362375, 446000, 557500, 579800, 724750, 1115000, 1159600, 1449500, 1811875, 2230000, 2899000, 3623750, 5798000, 7247500, 14495000, 28990000]

約数ペア:

[(1, 28990000), (2, 14495000), (4, 7247500), (5, 5798000), (8, 3623750), (10, 2899000), (13, 2230000), (16, 1811875), (20, 1449500), (25, 1159600), (26, 1115000), (40, 724750), (50, 579800), (52, 557500), (65, 446000), (80, 362375), (100, 289900), (104, 278750), (125, 231920), (130, 223000), (200, 144950), (208, 139375), (223, 130000), (250, 115960), (260, 111500), (325, 89200), (400, 72475), (446, 65000), (500, 57980), (520, 55750), (625, 46384), (650, 44600), (892, 32500), (1000, 28990), (1040, 27875), (1115, 26000), (1250, 23192), (1300, 22300), (1625, 17840), (1784, 16250), (2000, 14495), (2230, 13000), (2500, 11596), (2600, 11150), (2899, 10000), (3250, 8920), (3568, 8125), (4460, 6500), (5000, 5798), (5200, 5575)]