21465808

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:692

約数の個数: 80

約数和(自身を含む): 53496576

約数和(自身を除く): 32030768

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 23, 26, 28, 46, 52, 56, 91, 92, 104, 112, 161, 182, 184, 208, 299, 322, 364, 368, 598, 641, 644, 728, 1196, 1282, 1288, 1456, 2093, 2392, 2564, 2576, 4186, 4487, 4784, 5128, 8333, 8372, 8974, 10256, 14743, 16666, 16744, 17948, 29486, 33332, 33488, 35896, 58331, 58972, 66664, 71792, 103201, 116662, 117944, 133328, 191659, 206402, 233324, 235888, 383318, 412804, 466648, 766636, 825608, 933296, 1341613, 1533272, 1651216, 2683226, 3066544, 5366452, 10732904, 21465808]

約数ペア:

[(1, 21465808), (2, 10732904), (4, 5366452), (7, 3066544), (8, 2683226), (13, 1651216), (14, 1533272), (16, 1341613), (23, 933296), (26, 825608), (28, 766636), (46, 466648), (52, 412804), (56, 383318), (91, 235888), (92, 233324), (104, 206402), (112, 191659), (161, 133328), (182, 117944), (184, 116662), (208, 103201), (299, 71792), (322, 66664), (364, 58972), (368, 58331), (598, 35896), (641, 33488), (644, 33332), (728, 29486), (1196, 17948), (1282, 16744), (1288, 16666), (1456, 14743), (2093, 10256), (2392, 8974), (2564, 8372), (2576, 8333), (4186, 5128), (4487, 4784)]