28861960

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 68040000

約数和(自身を除く): 39178040

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 139, 145, 179, 232, 278, 290, 358, 556, 580, 695, 716, 895, 1112, 1160, 1390, 1432, 1790, 2780, 3580, 4031, 5191, 5560, 7160, 8062, 10382, 16124, 20155, 20764, 24881, 25955, 32248, 40310, 41528, 49762, 51910, 80620, 99524, 103820, 124405, 161240, 199048, 207640, 248810, 497620, 721549, 995240, 1443098, 2886196, 3607745, 5772392, 7215490, 14430980, 28861960]

約数ペア:

[(1, 28861960), (2, 14430980), (4, 7215490), (5, 5772392), (8, 3607745), (10, 2886196), (20, 1443098), (29, 995240), (40, 721549), (58, 497620), (116, 248810), (139, 207640), (145, 199048), (179, 161240), (232, 124405), (278, 103820), (290, 99524), (358, 80620), (556, 51910), (580, 49762), (695, 41528), (716, 40310), (895, 32248), (1112, 25955), (1160, 24881), (1390, 20764), (1432, 20155), (1790, 16124), (2780, 10382), (3580, 8062), (4031, 7160), (5191, 5560)]