20791066112

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{1309921}}^1$

素因数の和:1309970

約数の個数: 40

約数和(自身を含む): 42881606592

約数和(自身を除く): 22090540480

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1984, 3968, 7936, 15872, 1309921, 2619842, 5239684, 10479368, 20958736, 40607551, 41917472, 81215102, 83834944, 162430204, 167669888, 324860408, 335339776, 649720816, 670679552, 1299441632, 2598883264, 5197766528, 10395533056, 20791066112]

約数ペア:

[(1, 20791066112), (2, 10395533056), (4, 5197766528), (8, 2598883264), (16, 1299441632), (31, 670679552), (32, 649720816), (62, 335339776), (64, 324860408), (124, 167669888), (128, 162430204), (248, 83834944), (256, 81215102), (496, 41917472), (512, 40607551), (992, 20958736), (1984, 10479368), (3968, 5239684), (7936, 2619842), (15872, 1309921)]