19781490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{3643}}^1$

素因数の和:3834

約数の個数: 32

約数和(自身を含む): 47750976

約数和(自身を除く): 27969486

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 181, 362, 543, 905, 1086, 1810, 2715, 3643, 5430, 7286, 10929, 18215, 21858, 36430, 54645, 109290, 659383, 1318766, 1978149, 3296915, 3956298, 6593830, 9890745, 19781490]

約数ペア:

[(1, 19781490), (2, 9890745), (3, 6593830), (5, 3956298), (6, 3296915), (10, 1978149), (15, 1318766), (30, 659383), (181, 109290), (362, 54645), (543, 36430), (905, 21858), (1086, 18215), (1810, 10929), (2715, 7286), (3643, 5430)]