639779875

素因数分解:

$5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1327}}^1$

素因数の和:1397

約数の個数: 64

約数和(自身を含む): 994406400

約数和(自身を除く): 354626525

約数列:

[1, 5, 7, 19, 25, 29, 35, 95, 125, 133, 145, 175, 203, 475, 551, 665, 725, 875, 1015, 1327, 2375, 2755, 3325, 3625, 3857, 5075, 6635, 9289, 13775, 16625, 19285, 25213, 25375, 33175, 38483, 46445, 68875, 96425, 126065, 165875, 176491, 192415, 232225, 269381, 482125, 630325, 731177, 882455, 962075, 1161125, 1346905, 3151625, 3655885, 4412275, 4810375, 5118239, 6734525, 18279425, 22061375, 25591195, 33672625, 91397125, 127955975, 639779875]

約数ペア:

[(1, 639779875), (5, 127955975), (7, 91397125), (19, 33672625), (25, 25591195), (29, 22061375), (35, 18279425), (95, 6734525), (125, 5118239), (133, 4810375), (145, 4412275), (175, 3655885), (203, 3151625), (475, 1346905), (551, 1161125), (665, 962075), (725, 882455), (875, 731177), (1015, 630325), (1327, 482125), (2375, 269381), (2755, 232225), (3325, 192415), (3625, 176491), (3857, 165875), (5075, 126065), (6635, 96425), (9289, 68875), (13775, 46445), (16625, 38483), (19285, 33175), (25213, 25375)]