21144416

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{419}}^1$

素因数の和:531

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 23308384

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 83, 152, 166, 304, 332, 419, 608, 664, 838, 1328, 1577, 1676, 2656, 3154, 3352, 6308, 6704, 7961, 12616, 13408, 15922, 25232, 31844, 34777, 50464, 63688, 69554, 127376, 139108, 254752, 278216, 556432, 660763, 1112864, 1321526, 2643052, 5286104, 10572208, 21144416]

約数ペア:

[(1, 21144416), (2, 10572208), (4, 5286104), (8, 2643052), (16, 1321526), (19, 1112864), (32, 660763), (38, 556432), (76, 278216), (83, 254752), (152, 139108), (166, 127376), (304, 69554), (332, 63688), (419, 50464), (608, 34777), (664, 31844), (838, 25232), (1328, 15922), (1577, 13408), (1676, 12616), (2656, 7961), (3154, 6704), (3352, 6308)]