21120112

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1721}}^1$

素因数の和:1801

約数の個数: 40

約数和(自身を含む): 44840880

約数和(自身を除く): 23720768

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 59, 104, 118, 208, 236, 472, 767, 944, 1534, 1721, 3068, 3442, 6136, 6884, 12272, 13768, 22373, 27536, 44746, 89492, 101539, 178984, 203078, 357968, 406156, 812312, 1320007, 1624624, 2640014, 5280028, 10560056, 21120112]

約数ペア:

[(1, 21120112), (2, 10560056), (4, 5280028), (8, 2640014), (13, 1624624), (16, 1320007), (26, 812312), (52, 406156), (59, 357968), (104, 203078), (118, 178984), (208, 101539), (236, 89492), (472, 44746), (767, 27536), (944, 22373), (1534, 13768), (1721, 12272), (3068, 6884), (3442, 6136)]