78432820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1\times {\mathrm{499}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 171360000

約数和(自身を除く): 92927180

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 271, 290, 499, 542, 580, 998, 1084, 1355, 1996, 2495, 2710, 4990, 5420, 7859, 9980, 14471, 15718, 28942, 31436, 39295, 57884, 72355, 78590, 135229, 144710, 157180, 270458, 289420, 540916, 676145, 1352290, 2704580, 3921641, 7843282, 15686564, 19608205, 39216410, 78432820]

約数ペア:

[(1, 78432820), (2, 39216410), (4, 19608205), (5, 15686564), (10, 7843282), (20, 3921641), (29, 2704580), (58, 1352290), (116, 676145), (145, 540916), (271, 289420), (290, 270458), (499, 157180), (542, 144710), (580, 135229), (998, 78590), (1084, 72355), (1355, 57884), (1996, 39295), (2495, 31436), (2710, 28942), (4990, 15718), (5420, 14471), (7859, 9980)]