157212055

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{311}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 256628736

約数和(自身を除く): 99416681

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 101, 143, 311, 385, 455, 505, 707, 715, 1001, 1111, 1313, 1555, 2177, 3421, 3535, 4043, 5005, 5555, 6565, 7777, 9191, 10885, 14443, 17105, 20215, 23947, 28301, 31411, 38885, 44473, 45955, 72215, 101101, 119735, 141505, 157055, 219877, 222365, 311311, 345521, 408343, 505505, 1099385, 1556555, 1727605, 2041715, 2418647, 2858401, 4491773, 12093235, 14292005, 22458865, 31442411, 157212055]

約数ペア:

[(1, 157212055), (5, 31442411), (7, 22458865), (11, 14292005), (13, 12093235), (35, 4491773), (55, 2858401), (65, 2418647), (77, 2041715), (91, 1727605), (101, 1556555), (143, 1099385), (311, 505505), (385, 408343), (455, 345521), (505, 311311), (707, 222365), (715, 219877), (1001, 157055), (1111, 141505), (1313, 119735), (1555, 101101), (2177, 72215), (3421, 45955), (3535, 44473), (4043, 38885), (5005, 31411), (5555, 28301), (6565, 23947), (7777, 20215), (9191, 17105), (10885, 14443)]