81973227

素因数分解:

$3^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 137088000

約数和(自身を除く): 55114773

約数列:

[1, 3, 7, 21, 29, 41, 49, 67, 87, 123, 147, 201, 203, 287, 343, 469, 609, 861, 1029, 1189, 1407, 1421, 1943, 2009, 2747, 3283, 3567, 4263, 5829, 6027, 8241, 8323, 9849, 9947, 13601, 14063, 19229, 22981, 24969, 29841, 40803, 42189, 57687, 58261, 68943, 79663, 95207, 134603, 174783, 238989, 285621, 403809, 407827, 557641, 666449, 942221, 1223481, 1672923, 1999347, 2826663, 3903487, 11710461, 27324409, 81973227]

約数ペア:

[(1, 81973227), (3, 27324409), (7, 11710461), (21, 3903487), (29, 2826663), (41, 1999347), (49, 1672923), (67, 1223481), (87, 942221), (123, 666449), (147, 557641), (201, 407827), (203, 403809), (287, 285621), (343, 238989), (469, 174783), (609, 134603), (861, 95207), (1029, 79663), (1189, 68943), (1407, 58261), (1421, 57687), (1943, 42189), (2009, 40803), (2747, 29841), (3283, 24969), (3567, 22981), (4263, 19229), (5829, 14063), (6027, 13601), (8241, 9947), (8323, 9849)]