20079465

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1607}}^1$

素因数の和:1646

約数の個数: 48

約数和(自身を含む): 39595392

約数和(自身を除く): 19515927

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 49, 51, 85, 105, 119, 147, 245, 255, 357, 595, 735, 833, 1607, 1785, 2499, 4165, 4821, 8035, 11249, 12495, 24105, 27319, 33747, 56245, 78743, 81957, 136595, 168735, 191233, 236229, 393715, 409785, 573699, 956165, 1181145, 1338631, 2868495, 4015893, 6693155, 20079465]

約数ペア:

[(1, 20079465), (3, 6693155), (5, 4015893), (7, 2868495), (15, 1338631), (17, 1181145), (21, 956165), (35, 573699), (49, 409785), (51, 393715), (85, 236229), (105, 191233), (119, 168735), (147, 136595), (245, 81957), (255, 78743), (357, 56245), (595, 33747), (735, 27319), (833, 24105), (1607, 12495), (1785, 11249), (2499, 8035), (4165, 4821)]