21896680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2477}}^1$

素因数の和:2518

約数の個数: 64

約数和(自身を含む): 56201040

約数和(自身を除く): 34304360

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 2477, 4420, 4954, 8840, 9908, 12385, 19816, 24770, 32201, 42109, 49540, 64402, 84218, 99080, 128804, 161005, 168436, 210545, 257608, 322010, 336872, 421090, 547417, 644020, 842180, 1094834, 1288040, 1684360, 2189668, 2737085, 4379336, 5474170, 10948340, 21896680]

約数ペア:

[(1, 21896680), (2, 10948340), (4, 5474170), (5, 4379336), (8, 2737085), (10, 2189668), (13, 1684360), (17, 1288040), (20, 1094834), (26, 842180), (34, 644020), (40, 547417), (52, 421090), (65, 336872), (68, 322010), (85, 257608), (104, 210545), (130, 168436), (136, 161005), (170, 128804), (221, 99080), (260, 84218), (340, 64402), (442, 49540), (520, 42109), (680, 32201), (884, 24770), (1105, 19816), (1768, 12385), (2210, 9908), (2477, 8840), (4420, 4954)]