18638440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15031}}^1$

素因数の和:15073

約数の個数: 32

約数和(自身を含む): 43292160

約数和(自身を除く): 24653720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15031, 30062, 60124, 75155, 120248, 150310, 300620, 465961, 601240, 931922, 1863844, 2329805, 3727688, 4659610, 9319220, 18638440]

約数ペア:

[(1, 18638440), (2, 9319220), (4, 4659610), (5, 3727688), (8, 2329805), (10, 1863844), (20, 931922), (31, 601240), (40, 465961), (62, 300620), (124, 150310), (155, 120248), (248, 75155), (310, 60124), (620, 30062), (1240, 15031)]