128520680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{571}}^1$

素因数の和:930

約数の個数: 64

約数和(自身を含む): 307644480

約数和(自身を除く): 179123800

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 331, 340, 571, 662, 680, 1142, 1324, 1655, 2284, 2648, 2855, 3310, 4568, 5627, 5710, 6620, 9707, 11254, 11420, 13240, 19414, 22508, 22840, 28135, 38828, 45016, 48535, 56270, 77656, 97070, 112540, 189001, 194140, 225080, 378002, 388280, 756004, 945005, 1512008, 1890010, 3213017, 3780020, 6426034, 7560040, 12852068, 16065085, 25704136, 32130170, 64260340, 128520680]

約数ペア:

[(1, 128520680), (2, 64260340), (4, 32130170), (5, 25704136), (8, 16065085), (10, 12852068), (17, 7560040), (20, 6426034), (34, 3780020), (40, 3213017), (68, 1890010), (85, 1512008), (136, 945005), (170, 756004), (331, 388280), (340, 378002), (571, 225080), (662, 194140), (680, 189001), (1142, 112540), (1324, 97070), (1655, 77656), (2284, 56270), (2648, 48535), (2855, 45016), (3310, 38828), (4568, 28135), (5627, 22840), (5710, 22508), (6620, 19414), (9707, 13240), (11254, 11420)]