920720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{677}}^1$

素因数の和:707

約数の個数: 40

約数和(自身を含む): 2269944

約数和(自身を除く): 1349224

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 677, 680, 1354, 1360, 2708, 3385, 5416, 6770, 10832, 11509, 13540, 23018, 27080, 46036, 54160, 57545, 92072, 115090, 184144, 230180, 460360, 920720]

約数ペア:

[(1, 920720), (2, 460360), (4, 230180), (5, 184144), (8, 115090), (10, 92072), (16, 57545), (17, 54160), (20, 46036), (34, 27080), (40, 23018), (68, 13540), (80, 11509), (85, 10832), (136, 6770), (170, 5416), (272, 3385), (340, 2708), (677, 1360), (680, 1354)]