1328720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{977}}^1$

素因数の和:1007

約数の個数: 40

約数和(自身を含む): 3274344

約数和(自身を除く): 1945624

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 977, 1360, 1954, 3908, 4885, 7816, 9770, 15632, 16609, 19540, 33218, 39080, 66436, 78160, 83045, 132872, 166090, 265744, 332180, 664360, 1328720]

約数ペア:

[(1, 1328720), (2, 664360), (4, 332180), (5, 265744), (8, 166090), (10, 132872), (16, 83045), (17, 78160), (20, 66436), (34, 39080), (40, 33218), (68, 19540), (80, 16609), (85, 15632), (136, 9770), (170, 7816), (272, 4885), (340, 3908), (680, 1954), (977, 1360)]