20910900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1621}}^1$

素因数の和:1681

約数の個数: 72

約数和(自身を含む): 61947424

約数和(自身を除く): 41036524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 43, 50, 60, 75, 86, 100, 129, 150, 172, 215, 258, 300, 430, 516, 645, 860, 1075, 1290, 1621, 2150, 2580, 3225, 3242, 4300, 4863, 6450, 6484, 8105, 9726, 12900, 16210, 19452, 24315, 32420, 40525, 48630, 69703, 81050, 97260, 121575, 139406, 162100, 209109, 243150, 278812, 348515, 418218, 486300, 697030, 836436, 1045545, 1394060, 1742575, 2091090, 3485150, 4182180, 5227725, 6970300, 10455450, 20910900]

約数ペア:

[(1, 20910900), (2, 10455450), (3, 6970300), (4, 5227725), (5, 4182180), (6, 3485150), (10, 2091090), (12, 1742575), (15, 1394060), (20, 1045545), (25, 836436), (30, 697030), (43, 486300), (50, 418218), (60, 348515), (75, 278812), (86, 243150), (100, 209109), (129, 162100), (150, 139406), (172, 121575), (215, 97260), (258, 81050), (300, 69703), (430, 48630), (516, 40525), (645, 32420), (860, 24315), (1075, 19452), (1290, 16210), (1621, 12900), (2150, 9726), (2580, 8105), (3225, 6484), (3242, 6450), (4300, 4863)]