20739830

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{6421}}^1$

素因数の和:6464

約数の個数: 32

約数和(自身を含む): 41614560

約数和(自身を除く): 20874730

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 85, 95, 170, 190, 323, 646, 1615, 3230, 6421, 12842, 32105, 64210, 109157, 121999, 218314, 243998, 545785, 609995, 1091570, 1219990, 2073983, 4147966, 10369915, 20739830]

約数ペア:

[(1, 20739830), (2, 10369915), (5, 4147966), (10, 2073983), (17, 1219990), (19, 1091570), (34, 609995), (38, 545785), (85, 243998), (95, 218314), (170, 121999), (190, 109157), (323, 64210), (646, 32105), (1615, 12842), (3230, 6421)]