128422840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{35281}}^1$

素因数の和:35312

約数の個数: 64

約数和(自身を含む): 355642560

約数和(自身を除く): 227219720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 35281, 70562, 141124, 176405, 246967, 282248, 352810, 458653, 493934, 705620, 917306, 987868, 1234835, 1411240, 1834612, 1975736, 2293265, 2469670, 3210571, 3669224, 4586530, 4939340, 6421142, 9173060, 9878680, 12842284, 16052855, 18346120, 25684568, 32105710, 64211420, 128422840]

約数ペア:

[(1, 128422840), (2, 64211420), (4, 32105710), (5, 25684568), (7, 18346120), (8, 16052855), (10, 12842284), (13, 9878680), (14, 9173060), (20, 6421142), (26, 4939340), (28, 4586530), (35, 3669224), (40, 3210571), (52, 2469670), (56, 2293265), (65, 1975736), (70, 1834612), (91, 1411240), (104, 1234835), (130, 987868), (140, 917306), (182, 705620), (260, 493934), (280, 458653), (364, 352810), (455, 282248), (520, 246967), (728, 176405), (910, 141124), (1820, 70562), (3640, 35281)]