201520389

素因数分解:

$3^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 330752000

約数和(自身を除く): 129231611

約数列:

[1, 3, 7, 21, 37, 49, 67, 79, 111, 147, 201, 237, 259, 343, 469, 553, 777, 1029, 1407, 1659, 1813, 2479, 2923, 3283, 3871, 5293, 5439, 7437, 8769, 9849, 11613, 12691, 15879, 17353, 20461, 22981, 27097, 37051, 38073, 52059, 61383, 68943, 81291, 111153, 121471, 143227, 195841, 259357, 364413, 429681, 587523, 778071, 850297, 1002589, 1370887, 1815499, 2550891, 3007767, 4112661, 5446497, 9596209, 28788627, 67173463, 201520389]

約数ペア:

[(1, 201520389), (3, 67173463), (7, 28788627), (21, 9596209), (37, 5446497), (49, 4112661), (67, 3007767), (79, 2550891), (111, 1815499), (147, 1370887), (201, 1002589), (237, 850297), (259, 778071), (343, 587523), (469, 429681), (553, 364413), (777, 259357), (1029, 195841), (1407, 143227), (1659, 121471), (1813, 111153), (2479, 81291), (2923, 68943), (3283, 61383), (3871, 52059), (5293, 38073), (5439, 37051), (7437, 27097), (8769, 22981), (9849, 20461), (11613, 17353), (12691, 15879)]