129126760

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{65881}}^1$

素因数の和:65906

約数の個数: 48

約数和(自身を含む): 337974660

約数和(自身を除く): 208847900

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 65881, 131762, 263524, 329405, 461167, 527048, 658810, 922334, 1317620, 1844668, 2305835, 2635240, 3228169, 3689336, 4611670, 6456338, 9223340, 12912676, 16140845, 18446680, 25825352, 32281690, 64563380, 129126760]

約数ペア:

[(1, 129126760), (2, 64563380), (4, 32281690), (5, 25825352), (7, 18446680), (8, 16140845), (10, 12912676), (14, 9223340), (20, 6456338), (28, 4611670), (35, 3689336), (40, 3228169), (49, 2635240), (56, 2305835), (70, 1844668), (98, 1317620), (140, 922334), (196, 658810), (245, 527048), (280, 461167), (392, 329405), (490, 263524), (980, 131762), (1960, 65881)]