20263215

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1451}}^1$

素因数の和:1492

約数の個数: 48

約数和(自身を含む): 39726720

約数和(自身を除く): 19463505

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1451, 1995, 2793, 4353, 4655, 7255, 10157, 13965, 21765, 27569, 30471, 50785, 71099, 82707, 137845, 152355, 192983, 213297, 355495, 413535, 578949, 964915, 1066485, 1350881, 2894745, 4052643, 6754405, 20263215]

約数ペア:

[(1, 20263215), (3, 6754405), (5, 4052643), (7, 2894745), (15, 1350881), (19, 1066485), (21, 964915), (35, 578949), (49, 413535), (57, 355495), (95, 213297), (105, 192983), (133, 152355), (147, 137845), (245, 82707), (285, 71099), (399, 50785), (665, 30471), (735, 27569), (931, 21765), (1451, 13965), (1995, 10157), (2793, 7255), (4353, 4655)]