821104025

素因数分解:

$5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1$

素因数の和:391

約数の個数: 72

約数和(自身を含む): 1250527104

約数和(自身を除く): 429423079

約数列:

[1, 5, 7, 23, 25, 35, 49, 115, 151, 161, 175, 193, 245, 575, 755, 805, 965, 1057, 1127, 1225, 1351, 3473, 3775, 4025, 4439, 4825, 5285, 5635, 6755, 7399, 9457, 17365, 22195, 24311, 26425, 28175, 29143, 31073, 33775, 36995, 47285, 86825, 110975, 121555, 145715, 155365, 170177, 184975, 204001, 217511, 236425, 607775, 670289, 728575, 776825, 850885, 1020005, 1087555, 1428007, 3351445, 4254425, 4692023, 5100025, 5437775, 7140035, 16757225, 23460115, 32844161, 35700175, 117300575, 164220805, 821104025]

約数ペア:

[(1, 821104025), (5, 164220805), (7, 117300575), (23, 35700175), (25, 32844161), (35, 23460115), (49, 16757225), (115, 7140035), (151, 5437775), (161, 5100025), (175, 4692023), (193, 4254425), (245, 3351445), (575, 1428007), (755, 1087555), (805, 1020005), (965, 850885), (1057, 776825), (1127, 728575), (1225, 670289), (1351, 607775), (3473, 236425), (3775, 217511), (4025, 204001), (4439, 184975), (4825, 170177), (5285, 155365), (5635, 145715), (6755, 121555), (7399, 110975), (9457, 86825), (17365, 47285), (22195, 36995), (24311, 33775), (26425, 31073), (28175, 29143)]