21765260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:207

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 32424820

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 41, 44, 55, 76, 82, 95, 110, 127, 164, 190, 205, 209, 220, 254, 380, 410, 418, 451, 508, 635, 779, 820, 836, 902, 1045, 1270, 1397, 1558, 1804, 2090, 2255, 2413, 2540, 2794, 3116, 3895, 4180, 4510, 4826, 5207, 5588, 6985, 7790, 8569, 9020, 9652, 10414, 12065, 13970, 15580, 17138, 20828, 24130, 26035, 26543, 27940, 34276, 42845, 48260, 52070, 53086, 57277, 85690, 98933, 104140, 106172, 114554, 132715, 171380, 197866, 229108, 265430, 286385, 395732, 494665, 530860, 572770, 989330, 1088263, 1145540, 1978660, 2176526, 4353052, 5441315, 10882630, 21765260]

約数ペア:

[(1, 21765260), (2, 10882630), (4, 5441315), (5, 4353052), (10, 2176526), (11, 1978660), (19, 1145540), (20, 1088263), (22, 989330), (38, 572770), (41, 530860), (44, 494665), (55, 395732), (76, 286385), (82, 265430), (95, 229108), (110, 197866), (127, 171380), (164, 132715), (190, 114554), (205, 106172), (209, 104140), (220, 98933), (254, 85690), (380, 57277), (410, 53086), (418, 52070), (451, 48260), (508, 42845), (635, 34276), (779, 27940), (820, 26543), (836, 26035), (902, 24130), (1045, 20828), (1270, 17138), (1397, 15580), (1558, 13970), (1804, 12065), (2090, 10414), (2255, 9652), (2413, 9020), (2540, 8569), (2794, 7790), (3116, 6985), (3895, 5588), (4180, 5207), (4510, 4826)]