81719575

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 122849280

約数和(自身を除く): 41129705

約数列:

[1, 5, 7, 23, 25, 35, 79, 115, 161, 175, 257, 395, 553, 575, 805, 1285, 1799, 1817, 1975, 2765, 4025, 5911, 6425, 8995, 9085, 12719, 13825, 20303, 29555, 41377, 44975, 45425, 63595, 101515, 142121, 147775, 206885, 317975, 466969, 507575, 710605, 1034425, 2334845, 3268783, 3553025, 11674225, 16343915, 81719575]

約数ペア:

[(1, 81719575), (5, 16343915), (7, 11674225), (23, 3553025), (25, 3268783), (35, 2334845), (79, 1034425), (115, 710605), (161, 507575), (175, 466969), (257, 317975), (395, 206885), (553, 147775), (575, 142121), (805, 101515), (1285, 63595), (1799, 45425), (1817, 44975), (1975, 41377), (2765, 29555), (4025, 20303), (5911, 13825), (6425, 12719), (8995, 9085)]