21668740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{449}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 48384000

約数和(自身を除く): 26715260

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 127, 190, 254, 380, 449, 508, 635, 898, 1270, 1796, 2245, 2413, 2540, 4490, 4826, 8531, 8980, 9652, 12065, 17062, 24130, 34124, 42655, 48260, 57023, 85310, 114046, 170620, 228092, 285115, 570230, 1083437, 1140460, 2166874, 4333748, 5417185, 10834370, 21668740]

約数ペア:

[(1, 21668740), (2, 10834370), (4, 5417185), (5, 4333748), (10, 2166874), (19, 1140460), (20, 1083437), (38, 570230), (76, 285115), (95, 228092), (127, 170620), (190, 114046), (254, 85310), (380, 57023), (449, 48260), (508, 42655), (635, 34124), (898, 24130), (1270, 17062), (1796, 12065), (2245, 9652), (2413, 8980), (2540, 8531), (4490, 4826)]