85909990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{2857}}^1$

素因数の和:2992

約数の個数: 32

約数和(自身を含む): 161328384

約数和(自身を除く): 75418394

約数列:

[1, 2, 5, 10, 31, 62, 97, 155, 194, 310, 485, 970, 2857, 3007, 5714, 6014, 14285, 15035, 28570, 30070, 88567, 177134, 277129, 442835, 554258, 885670, 1385645, 2771290, 8590999, 17181998, 42954995, 85909990]

約数ペア:

[(1, 85909990), (2, 42954995), (5, 17181998), (10, 8590999), (31, 2771290), (62, 1385645), (97, 885670), (155, 554258), (194, 442835), (310, 277129), (485, 177134), (970, 88567), (2857, 30070), (3007, 28570), (5714, 15035), (6014, 14285)]