305480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1091}}^1$

素因数の和:1109

約数の個数: 32

約数和(自身を含む): 786240

約数和(自身を除く): 480760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1091, 2182, 4364, 5455, 7637, 8728, 10910, 15274, 21820, 30548, 38185, 43640, 61096, 76370, 152740, 305480]

約数ペア:

[(1, 305480), (2, 152740), (4, 76370), (5, 61096), (7, 43640), (8, 38185), (10, 30548), (14, 21820), (20, 15274), (28, 10910), (35, 8728), (40, 7637), (56, 5455), (70, 4364), (140, 2182), (280, 1091)]