442240

素因数分解:

$2^7\times 5^1\times {\mathrm{691}}^1$

素因数の和:710

約数の個数: 32

約数和(自身を含む): 1058760

約数和(自身を除く): 616520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 691, 1382, 2764, 3455, 5528, 6910, 11056, 13820, 22112, 27640, 44224, 55280, 88448, 110560, 221120, 442240]

約数ペア:

[(1, 442240), (2, 221120), (4, 110560), (5, 88448), (8, 55280), (10, 44224), (16, 27640), (20, 22112), (32, 13820), (40, 11056), (64, 6910), (80, 5528), (128, 3455), (160, 2764), (320, 1382), (640, 691)]