20994390

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{25919}}^1$

素因数の和:25938

約数の個数: 40

約数和(自身を含む): 56453760

約数和(自身を除く): 35459370

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 25919, 51838, 77757, 129595, 155514, 233271, 259190, 388785, 466542, 699813, 777570, 1166355, 1399626, 2099439, 2332710, 3499065, 4198878, 6998130, 10497195, 20994390]

約数ペア:

[(1, 20994390), (2, 10497195), (3, 6998130), (5, 4198878), (6, 3499065), (9, 2332710), (10, 2099439), (15, 1399626), (18, 1166355), (27, 777570), (30, 699813), (45, 466542), (54, 388785), (81, 259190), (90, 233271), (135, 155514), (162, 129595), (270, 77757), (405, 51838), (810, 25919)]