247989460

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{399983}}^1$

素因数の和:400023

約数の個数: 24

約数和(自身を含む): 537578496

約数和(自身を除く): 289589036

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 399983, 799966, 1599932, 1999915, 3999830, 7999660, 12399473, 24798946, 49597892, 61997365, 123994730, 247989460]

約数ペア:

[(1, 247989460), (2, 123994730), (4, 61997365), (5, 49597892), (10, 24798946), (20, 12399473), (31, 7999660), (62, 3999830), (124, 1999915), (155, 1599932), (310, 799966), (620, 399983)]