21286688

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:409

約数の個数: 48

約数和(自身を含む): 44593920

約数和(自身を除く): 23307232

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 157, 223, 304, 314, 446, 608, 628, 892, 1256, 1784, 2512, 2983, 3568, 4237, 5024, 5966, 7136, 8474, 11932, 16948, 23864, 33896, 35011, 47728, 67792, 70022, 95456, 135584, 140044, 280088, 560176, 665209, 1120352, 1330418, 2660836, 5321672, 10643344, 21286688]

約数ペア:

[(1, 21286688), (2, 10643344), (4, 5321672), (8, 2660836), (16, 1330418), (19, 1120352), (32, 665209), (38, 560176), (76, 280088), (152, 140044), (157, 135584), (223, 95456), (304, 70022), (314, 67792), (446, 47728), (608, 35011), (628, 33896), (892, 23864), (1256, 16948), (1784, 11932), (2512, 8474), (2983, 7136), (3568, 5966), (4237, 5024)]