81356175

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:317

約数の個数: 72

約数和(自身を含む): 154752000

約数和(自身を除く): 73395825

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 79, 115, 199, 207, 225, 237, 345, 395, 575, 597, 711, 995, 1035, 1185, 1725, 1791, 1817, 1975, 2985, 3555, 4577, 4975, 5175, 5451, 5925, 8955, 9085, 13731, 14925, 15721, 16353, 17775, 22885, 27255, 41193, 44775, 45425, 47163, 68655, 78605, 81765, 114425, 136275, 141489, 205965, 235815, 343275, 361583, 393025, 408825, 707445, 1029825, 1084749, 1179075, 1807915, 3254247, 3537225, 5423745, 9039575, 16271235, 27118725, 81356175]

約数ペア:

[(1, 81356175), (3, 27118725), (5, 16271235), (9, 9039575), (15, 5423745), (23, 3537225), (25, 3254247), (45, 1807915), (69, 1179075), (75, 1084749), (79, 1029825), (115, 707445), (199, 408825), (207, 393025), (225, 361583), (237, 343275), (345, 235815), (395, 205965), (575, 141489), (597, 136275), (711, 114425), (995, 81765), (1035, 78605), (1185, 68655), (1725, 47163), (1791, 45425), (1817, 44775), (1975, 41193), (2985, 27255), (3555, 22885), (4577, 17775), (4975, 16353), (5175, 15721), (5451, 14925), (5925, 13731), (8955, 9085)]