4378400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{421}}^1$

素因数の和:454

約数の個数: 72

約数和(自身を含む): 11538324

約数和(自身を除く): 7159924

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 100, 104, 130, 160, 200, 208, 260, 325, 400, 416, 421, 520, 650, 800, 842, 1040, 1300, 1684, 2080, 2105, 2600, 3368, 4210, 5200, 5473, 6736, 8420, 10400, 10525, 10946, 13472, 16840, 21050, 21892, 27365, 33680, 42100, 43784, 54730, 67360, 84200, 87568, 109460, 136825, 168400, 175136, 218920, 273650, 336800, 437840, 547300, 875680, 1094600, 2189200, 4378400]

約数ペア:

[(1, 4378400), (2, 2189200), (4, 1094600), (5, 875680), (8, 547300), (10, 437840), (13, 336800), (16, 273650), (20, 218920), (25, 175136), (26, 168400), (32, 136825), (40, 109460), (50, 87568), (52, 84200), (65, 67360), (80, 54730), (100, 43784), (104, 42100), (130, 33680), (160, 27365), (200, 21892), (208, 21050), (260, 16840), (325, 13472), (400, 10946), (416, 10525), (421, 10400), (520, 8420), (650, 6736), (800, 5473), (842, 5200), (1040, 4210), (1300, 3368), (1684, 2600), (2080, 2105)]