20217531789

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{163481}}^1$

素因数の和:163658

約数の個数: 48

約数和(自身を含む): 36180528384

約数和(自身を除く): 15962996595

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 151, 273, 453, 819, 1057, 1359, 1963, 3171, 5889, 9513, 13741, 17667, 41223, 123669, 163481, 490443, 1144367, 1471329, 2125253, 3433101, 6375759, 10299303, 14876771, 19127277, 24685631, 44630313, 74056893, 133890939, 172799417, 222170679, 320913203, 518398251, 962739609, 1555194753, 2246392421, 2888218827, 6739177263, 20217531789]

約数ペア:

[(1, 20217531789), (3, 6739177263), (7, 2888218827), (9, 2246392421), (13, 1555194753), (21, 962739609), (39, 518398251), (63, 320913203), (91, 222170679), (117, 172799417), (151, 133890939), (273, 74056893), (453, 44630313), (819, 24685631), (1057, 19127277), (1359, 14876771), (1963, 10299303), (3171, 6375759), (5889, 3433101), (9513, 2125253), (13741, 1471329), (17667, 1144367), (41223, 490443), (123669, 163481)]