394726840

素因数分解:

$2^3\times 5^1\times {\mathrm{691}}^1\times {\mathrm{14281}}^1$

素因数の和:14983

約数の個数: 32

約数和(自身を含む): 889482960

約数和(自身を除く): 494756120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 691, 1382, 2764, 3455, 5528, 6910, 13820, 14281, 27640, 28562, 57124, 71405, 114248, 142810, 285620, 571240, 9868171, 19736342, 39472684, 49340855, 78945368, 98681710, 197363420, 394726840]

約数ペア:

[(1, 394726840), (2, 197363420), (4, 98681710), (5, 78945368), (8, 49340855), (10, 39472684), (20, 19736342), (40, 9868171), (691, 571240), (1382, 285620), (2764, 142810), (3455, 114248), (5528, 71405), (6910, 57124), (13820, 28562), (14281, 27640)]