12880400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2477}}^1$

素因数の和:2508

約数の個数: 60

約数和(自身を含む): 33339012

約数和(自身を除く): 20458612

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, 2477, 2600, 4954, 5200, 9908, 12385, 19816, 24770, 32201, 39632, 49540, 61925, 64402, 99080, 123850, 128804, 161005, 198160, 247700, 257608, 322010, 495400, 515216, 644020, 805025, 990800, 1288040, 1610050, 2576080, 3220100, 6440200, 12880400]

約数ペア:

[(1, 12880400), (2, 6440200), (4, 3220100), (5, 2576080), (8, 1610050), (10, 1288040), (13, 990800), (16, 805025), (20, 644020), (25, 515216), (26, 495400), (40, 322010), (50, 257608), (52, 247700), (65, 198160), (80, 161005), (100, 128804), (104, 123850), (130, 99080), (200, 64402), (208, 61925), (260, 49540), (325, 39632), (400, 32201), (520, 24770), (650, 19816), (1040, 12385), (1300, 9908), (2477, 5200), (2600, 4954)]