20858528075

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{2441}}^1$

素因数の和:2685

約数の個数: 96

約数和(自身を含む): 33836977152

約数和(自身を除く): 12978449077

約数列:

[1, 5, 7, 11, 23, 25, 35, 55, 77, 115, 161, 175, 193, 253, 275, 385, 575, 805, 965, 1265, 1351, 1771, 1925, 2123, 2441, 4025, 4439, 4825, 6325, 6755, 8855, 10615, 12205, 14861, 17087, 22195, 26851, 31073, 33775, 44275, 48829, 53075, 56143, 61025, 74305, 85435, 110975, 134255, 155365, 187957, 244145, 280715, 341803, 371525, 393001, 427175, 471113, 617573, 671275, 776825, 939785, 1220725, 1403575, 1709015, 1965005, 2355565, 3087865, 3297791, 4323011, 4698925, 5182243, 8545075, 9825025, 10835599, 11777825, 15439325, 16488955, 21615055, 25911215, 36275701, 54177995, 75849193, 82444775, 108075275, 119191589, 129556075, 181378505, 270889975, 379245965, 595957945, 834341123, 906892525, 1896229825, 2979789725, 4171705615, 20858528075]

約数ペア:

[(1, 20858528075), (5, 4171705615), (7, 2979789725), (11, 1896229825), (23, 906892525), (25, 834341123), (35, 595957945), (55, 379245965), (77, 270889975), (115, 181378505), (161, 129556075), (175, 119191589), (193, 108075275), (253, 82444775), (275, 75849193), (385, 54177995), (575, 36275701), (805, 25911215), (965, 21615055), (1265, 16488955), (1351, 15439325), (1771, 11777825), (1925, 10835599), (2123, 9825025), (2441, 8545075), (4025, 5182243), (4439, 4698925), (4825, 4323011), (6325, 3297791), (6755, 3087865), (8855, 2355565), (10615, 1965005), (12205, 1709015), (14861, 1403575), (17087, 1220725), (22195, 939785), (26851, 776825), (31073, 671275), (33775, 617573), (44275, 471113), (48829, 427175), (53075, 393001), (56143, 371525), (61025, 341803), (74305, 280715), (85435, 244145), (110975, 187957), (134255, 155365)]