28740400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5527}}^1$

素因数の和:5558

約数の個数: 60

約数和(自身を含む): 74373712

約数和(自身を除く): 45633312

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 5527, 11054, 22108, 27635, 44216, 55270, 71851, 88432, 110540, 138175, 143702, 221080, 276350, 287404, 359255, 442160, 552700, 574808, 718510, 1105400, 1149616, 1437020, 1796275, 2210800, 2874040, 3592550, 5748080, 7185100, 14370200, 28740400]

約数ペア:

[(1, 28740400), (2, 14370200), (4, 7185100), (5, 5748080), (8, 3592550), (10, 2874040), (13, 2210800), (16, 1796275), (20, 1437020), (25, 1149616), (26, 1105400), (40, 718510), (50, 574808), (52, 552700), (65, 442160), (80, 359255), (100, 287404), (104, 276350), (130, 221080), (200, 143702), (208, 138175), (260, 110540), (325, 88432), (400, 71851), (520, 55270), (650, 44216), (1040, 27635), (1300, 22108), (2600, 11054), (5200, 5527)]