20745135

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 37559808

約数和(自身を除く): 16814673

約数列:

[1, 3, 5, 9, 15, 43, 45, 71, 129, 151, 213, 215, 355, 387, 453, 639, 645, 755, 1065, 1359, 1935, 2265, 3053, 3195, 6493, 6795, 9159, 10721, 15265, 19479, 27477, 32163, 32465, 45795, 53605, 58437, 96489, 97395, 137385, 160815, 292185, 461003, 482445, 1383009, 2305015, 4149027, 6915045, 20745135]

約数ペア:

[(1, 20745135), (3, 6915045), (5, 4149027), (9, 2305015), (15, 1383009), (43, 482445), (45, 461003), (71, 292185), (129, 160815), (151, 137385), (213, 97395), (215, 96489), (355, 58437), (387, 53605), (453, 45795), (639, 32465), (645, 32163), (755, 27477), (1065, 19479), (1359, 15265), (1935, 10721), (2265, 9159), (3053, 6795), (3195, 6493)]