20461480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{109}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 52806600

約数和(自身を除く): 32345120

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 109, 130, 152, 190, 218, 247, 260, 361, 380, 436, 494, 520, 545, 722, 760, 872, 988, 1090, 1235, 1417, 1444, 1805, 1976, 2071, 2180, 2470, 2834, 2888, 3610, 4142, 4360, 4693, 4940, 5668, 7085, 7220, 8284, 9386, 9880, 10355, 11336, 14170, 14440, 16568, 18772, 20710, 23465, 26923, 28340, 37544, 39349, 41420, 46930, 53846, 56680, 78698, 82840, 93860, 107692, 134615, 157396, 187720, 196745, 215384, 269230, 314792, 393490, 511537, 538460, 786980, 1023074, 1076920, 1573960, 2046148, 2557685, 4092296, 5115370, 10230740, 20461480]

約数ペア:

[(1, 20461480), (2, 10230740), (4, 5115370), (5, 4092296), (8, 2557685), (10, 2046148), (13, 1573960), (19, 1076920), (20, 1023074), (26, 786980), (38, 538460), (40, 511537), (52, 393490), (65, 314792), (76, 269230), (95, 215384), (104, 196745), (109, 187720), (130, 157396), (152, 134615), (190, 107692), (218, 93860), (247, 82840), (260, 78698), (361, 56680), (380, 53846), (436, 46930), (494, 41420), (520, 39349), (545, 37544), (722, 28340), (760, 26923), (872, 23465), (988, 20710), (1090, 18772), (1235, 16568), (1417, 14440), (1444, 14170), (1805, 11336), (1976, 10355), (2071, 9880), (2180, 9386), (2470, 8284), (2834, 7220), (2888, 7085), (3610, 5668), (4142, 4940), (4360, 4693)]