21396470

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5927}}^1$

素因数の和:5972

約数の個数: 24

約数和(自身を含む): 40654224

約数和(自身を除く): 19257754

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 361, 722, 1805, 3610, 5927, 11854, 29635, 59270, 112613, 225226, 563065, 1126130, 2139647, 4279294, 10698235, 21396470]

約数ペア:

[(1, 21396470), (2, 10698235), (5, 4279294), (10, 2139647), (19, 1126130), (38, 563065), (95, 225226), (190, 112613), (361, 59270), (722, 29635), (1805, 11854), (3610, 5927)]