19552816

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:617

約数の個数: 40

約数和(自身を含む): 39680000

約数和(自身を除く): 20127184

約数列:

[1, 2, 4, 8, 16, 31, 62, 79, 124, 158, 248, 316, 496, 499, 632, 998, 1264, 1996, 2449, 3992, 4898, 7984, 9796, 15469, 19592, 30938, 39184, 39421, 61876, 78842, 123752, 157684, 247504, 315368, 630736, 1222051, 2444102, 4888204, 9776408, 19552816]

約数ペア:

[(1, 19552816), (2, 9776408), (4, 4888204), (8, 2444102), (16, 1222051), (31, 630736), (62, 315368), (79, 247504), (124, 157684), (158, 123752), (248, 78842), (316, 61876), (496, 39421), (499, 39184), (632, 30938), (998, 19592), (1264, 15469), (1996, 9796), (2449, 7984), (3992, 4898)]