628480

素因数分解:

$2^8\times 5^1\times {\mathrm{491}}^1$

素因数の和:512

約数の個数: 36

約数和(自身を含む): 1508472

約数和(自身を除く): 879992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 491, 640, 982, 1280, 1964, 2455, 3928, 4910, 7856, 9820, 15712, 19640, 31424, 39280, 62848, 78560, 125696, 157120, 314240, 628480]

約数ペア:

[(1, 628480), (2, 314240), (4, 157120), (5, 125696), (8, 78560), (10, 62848), (16, 39280), (20, 31424), (32, 19640), (40, 15712), (64, 9820), (80, 7856), (128, 4910), (160, 3928), (256, 2455), (320, 1964), (491, 1280), (640, 982)]