18328720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13477}}^1$

素因数の和:13507

約数の個数: 40

約数和(自身を含む): 45124344

約数和(自身を除く): 26795624

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13477, 26954, 53908, 67385, 107816, 134770, 215632, 229109, 269540, 458218, 539080, 916436, 1078160, 1145545, 1832872, 2291090, 3665744, 4582180, 9164360, 18328720]

約数ペア:

[(1, 18328720), (2, 9164360), (4, 4582180), (5, 3665744), (8, 2291090), (10, 1832872), (16, 1145545), (17, 1078160), (20, 916436), (34, 539080), (40, 458218), (68, 269540), (80, 229109), (85, 215632), (136, 134770), (170, 107816), (272, 67385), (340, 53908), (680, 26954), (1360, 13477)]