21931312

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1087}}^1$

素因数の和:1205

約数の個数: 40

約数和(自身を含む): 46274816

約数和(自身を除く): 24343504

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 97, 104, 194, 208, 388, 776, 1087, 1261, 1552, 2174, 2522, 4348, 5044, 8696, 10088, 14131, 17392, 20176, 28262, 56524, 105439, 113048, 210878, 226096, 421756, 843512, 1370707, 1687024, 2741414, 5482828, 10965656, 21931312]

約数ペア:

[(1, 21931312), (2, 10965656), (4, 5482828), (8, 2741414), (13, 1687024), (16, 1370707), (26, 843512), (52, 421756), (97, 226096), (104, 210878), (194, 113048), (208, 105439), (388, 56524), (776, 28262), (1087, 20176), (1261, 17392), (1552, 14131), (2174, 10088), (2522, 8696), (4348, 5044)]