19976648

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{739}}^1$

素因数の和:885

約数の個数: 32

約数和(自身を含む): 39072000

約数和(自身を除く): 19095352

約数列:

[1, 2, 4, 8, 31, 62, 109, 124, 218, 248, 436, 739, 872, 1478, 2956, 3379, 5912, 6758, 13516, 22909, 27032, 45818, 80551, 91636, 161102, 183272, 322204, 644408, 2497081, 4994162, 9988324, 19976648]

約数ペア:

[(1, 19976648), (2, 9988324), (4, 4994162), (8, 2497081), (31, 644408), (62, 322204), (109, 183272), (124, 161102), (218, 91636), (248, 80551), (436, 45818), (739, 27032), (872, 22909), (1478, 13516), (2956, 6758), (3379, 5912)]