205705605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{571}}^1$

素因数の和:706

約数の個数: 64

約数和(自身を含む): 390094848

約数和(自身を除く): 184389243

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 73, 105, 141, 219, 235, 329, 365, 511, 571, 705, 987, 1095, 1533, 1645, 1713, 2555, 2855, 3431, 3997, 4935, 7665, 8565, 10293, 11991, 17155, 19985, 24017, 26837, 41683, 51465, 59955, 72051, 80511, 120085, 125049, 134185, 187859, 208415, 291781, 360255, 402555, 563577, 625245, 875343, 939295, 1458905, 1959101, 2817885, 4376715, 5877303, 9795505, 13713707, 29386515, 41141121, 68568535, 205705605]

約数ペア:

[(1, 205705605), (3, 68568535), (5, 41141121), (7, 29386515), (15, 13713707), (21, 9795505), (35, 5877303), (47, 4376715), (73, 2817885), (105, 1959101), (141, 1458905), (219, 939295), (235, 875343), (329, 625245), (365, 563577), (511, 402555), (571, 360255), (705, 291781), (987, 208415), (1095, 187859), (1533, 134185), (1645, 125049), (1713, 120085), (2555, 80511), (2855, 72051), (3431, 59955), (3997, 51465), (4935, 41683), (7665, 26837), (8565, 24017), (10293, 19985), (11991, 17155)]