7281405

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 13343616

約数和(自身を除く): 6062211

約数列:

[1, 3, 5, 9, 15, 43, 45, 53, 71, 129, 159, 213, 215, 265, 355, 387, 477, 639, 645, 795, 1065, 1935, 2279, 2385, 3053, 3195, 3763, 6837, 9159, 11289, 11395, 15265, 18815, 20511, 27477, 33867, 34185, 45795, 56445, 102555, 137385, 161809, 169335, 485427, 809045, 1456281, 2427135, 7281405]

約数ペア:

[(1, 7281405), (3, 2427135), (5, 1456281), (9, 809045), (15, 485427), (43, 169335), (45, 161809), (53, 137385), (71, 102555), (129, 56445), (159, 45795), (213, 34185), (215, 33867), (265, 27477), (355, 20511), (387, 18815), (477, 15265), (639, 11395), (645, 11289), (795, 9159), (1065, 6837), (1935, 3763), (2279, 3195), (2385, 3053)]