20513415

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1783}}^1$

素因数の和:1863

約数の個数: 32

約数和(自身を含む): 35965440

約数和(自身を除く): 15452025

約数列:

[1, 3, 5, 13, 15, 39, 59, 65, 177, 195, 295, 767, 885, 1783, 2301, 3835, 5349, 8915, 11505, 23179, 26745, 69537, 105197, 115895, 315591, 347685, 525985, 1367561, 1577955, 4102683, 6837805, 20513415]

約数ペア:

[(1, 20513415), (3, 6837805), (5, 4102683), (13, 1577955), (15, 1367561), (39, 525985), (59, 347685), (65, 315591), (177, 115895), (195, 105197), (295, 69537), (767, 26745), (885, 23179), (1783, 11505), (2301, 8915), (3835, 5349)]