1291288720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{949477}}^1$

素因数の和:949507

約数の個数: 40

約数和(自身を含む): 3178852344

約数和(自身を除く): 1887563624

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 949477, 1898954, 3797908, 4747385, 7595816, 9494770, 15191632, 16141109, 18989540, 32282218, 37979080, 64564436, 75958160, 80705545, 129128872, 161411090, 258257744, 322822180, 645644360, 1291288720]

約数ペア:

[(1, 1291288720), (2, 645644360), (4, 322822180), (5, 258257744), (8, 161411090), (10, 129128872), (16, 80705545), (17, 75958160), (20, 64564436), (34, 37979080), (40, 32282218), (68, 18989540), (80, 16141109), (85, 15191632), (136, 9494770), (170, 7595816), (272, 4747385), (340, 3797908), (680, 1898954), (1360, 949477)]