19978210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{1709}}^1$

素因数の和:1890

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 21390110

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 167, 334, 835, 1169, 1670, 1709, 2338, 3418, 5845, 8545, 11690, 11963, 17090, 23926, 59815, 119630, 285403, 570806, 1427015, 1997821, 2854030, 3995642, 9989105, 19978210]

約数ペア:

[(1, 19978210), (2, 9989105), (5, 3995642), (7, 2854030), (10, 1997821), (14, 1427015), (35, 570806), (70, 285403), (167, 119630), (334, 59815), (835, 23926), (1169, 17090), (1670, 11963), (1709, 11690), (2338, 8545), (3418, 5845)]