85815340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1381}}^1$

素因数の和:1642

約数の個数: 48

約数和(自身を含む): 195027840

約数和(自身を除く): 109212500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 239, 260, 478, 956, 1195, 1381, 2390, 2762, 3107, 4780, 5524, 6214, 6905, 12428, 13810, 15535, 17953, 27620, 31070, 35906, 62140, 71812, 89765, 179530, 330059, 359060, 660118, 1320236, 1650295, 3300590, 4290767, 6601180, 8581534, 17163068, 21453835, 42907670, 85815340]

約数ペア:

[(1, 85815340), (2, 42907670), (4, 21453835), (5, 17163068), (10, 8581534), (13, 6601180), (20, 4290767), (26, 3300590), (52, 1650295), (65, 1320236), (130, 660118), (239, 359060), (260, 330059), (478, 179530), (956, 89765), (1195, 71812), (1381, 62140), (2390, 35906), (2762, 31070), (3107, 27620), (4780, 17953), (5524, 15535), (6214, 13810), (6905, 12428)]