21215856

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{541}}^1$

素因数の和:614

約数の個数: 80

約数和(自身を含む): 59143040

約数和(自身を除く): 37927184

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 38, 43, 48, 57, 76, 86, 114, 129, 152, 172, 228, 258, 304, 344, 456, 516, 541, 688, 817, 912, 1032, 1082, 1623, 1634, 2064, 2164, 2451, 3246, 3268, 4328, 4902, 6492, 6536, 8656, 9804, 10279, 12984, 13072, 19608, 20558, 23263, 25968, 30837, 39216, 41116, 46526, 61674, 69789, 82232, 93052, 123348, 139578, 164464, 186104, 246696, 279156, 372208, 441997, 493392, 558312, 883994, 1116624, 1325991, 1767988, 2651982, 3535976, 5303964, 7071952, 10607928, 21215856]

約数ペア:

[(1, 21215856), (2, 10607928), (3, 7071952), (4, 5303964), (6, 3535976), (8, 2651982), (12, 1767988), (16, 1325991), (19, 1116624), (24, 883994), (38, 558312), (43, 493392), (48, 441997), (57, 372208), (76, 279156), (86, 246696), (114, 186104), (129, 164464), (152, 139578), (172, 123348), (228, 93052), (258, 82232), (304, 69789), (344, 61674), (456, 46526), (516, 41116), (541, 39216), (688, 30837), (817, 25968), (912, 23263), (1032, 20558), (1082, 19608), (1623, 13072), (1634, 12984), (2064, 10279), (2164, 9804), (2451, 8656), (3246, 6536), (3268, 6492), (4328, 4902)]