21004672

素因数分解:

$2^7\times {\mathrm{13}}^2\times {\mathrm{971}}^1$

素因数の和:1011

約数の個数: 48

約数和(自身を含む): 45358380

約数和(自身を除く): 24353708

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 169, 208, 338, 416, 676, 832, 971, 1352, 1664, 1942, 2704, 3884, 5408, 7768, 10816, 12623, 15536, 21632, 25246, 31072, 50492, 62144, 100984, 124288, 164099, 201968, 328198, 403936, 656396, 807872, 1312792, 1615744, 2625584, 5251168, 10502336, 21004672]

約数ペア:

[(1, 21004672), (2, 10502336), (4, 5251168), (8, 2625584), (13, 1615744), (16, 1312792), (26, 807872), (32, 656396), (52, 403936), (64, 328198), (104, 201968), (128, 164099), (169, 124288), (208, 100984), (338, 62144), (416, 50492), (676, 31072), (832, 25246), (971, 21632), (1352, 15536), (1664, 12623), (1942, 10816), (2704, 7768), (3884, 5408)]