64818320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{409}}^1$

素因数の和:712

約数の個数: 80

約数和(自身を含む): 173262720

約数和(自身を除く): 108444400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 283, 409, 560, 566, 818, 1132, 1415, 1636, 1981, 2045, 2264, 2830, 2863, 3272, 3962, 4090, 4528, 5660, 5726, 6544, 7924, 8180, 9905, 11320, 11452, 14315, 15848, 16360, 19810, 22640, 22904, 28630, 31696, 32720, 39620, 45808, 57260, 79240, 114520, 115747, 158480, 229040, 231494, 462988, 578735, 810229, 925976, 1157470, 1620458, 1851952, 2314940, 3240916, 4051145, 4629880, 6481832, 8102290, 9259760, 12963664, 16204580, 32409160, 64818320]

約数ペア:

[(1, 64818320), (2, 32409160), (4, 16204580), (5, 12963664), (7, 9259760), (8, 8102290), (10, 6481832), (14, 4629880), (16, 4051145), (20, 3240916), (28, 2314940), (35, 1851952), (40, 1620458), (56, 1157470), (70, 925976), (80, 810229), (112, 578735), (140, 462988), (280, 231494), (283, 229040), (409, 158480), (560, 115747), (566, 114520), (818, 79240), (1132, 57260), (1415, 45808), (1636, 39620), (1981, 32720), (2045, 31696), (2264, 28630), (2830, 22904), (2863, 22640), (3272, 19810), (3962, 16360), (4090, 15848), (4528, 14315), (5660, 11452), (5726, 11320), (6544, 9905), (7924, 8180)]