21267848

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:270

約数の個数: 64

約数和(自身を含む): 47779200

約数和(自身を除く): 26511352

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 59, 82, 118, 157, 164, 236, 287, 314, 328, 413, 472, 574, 628, 826, 1099, 1148, 1256, 1652, 2198, 2296, 2419, 3304, 4396, 4838, 6437, 8792, 9263, 9676, 12874, 16933, 18526, 19352, 25748, 33866, 37052, 45059, 51496, 64841, 67732, 74104, 90118, 129682, 135464, 180236, 259364, 360472, 379783, 518728, 759566, 1519132, 2658481, 3038264, 5316962, 10633924, 21267848]

約数ペア:

[(1, 21267848), (2, 10633924), (4, 5316962), (7, 3038264), (8, 2658481), (14, 1519132), (28, 759566), (41, 518728), (56, 379783), (59, 360472), (82, 259364), (118, 180236), (157, 135464), (164, 129682), (236, 90118), (287, 74104), (314, 67732), (328, 64841), (413, 51496), (472, 45059), (574, 37052), (628, 33866), (826, 25748), (1099, 19352), (1148, 18526), (1256, 16933), (1652, 12874), (2198, 9676), (2296, 9263), (2419, 8792), (3304, 6437), (4396, 4838)]