20702955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{523}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 42255360

約数和(自身を除く): 21552405

約数列:

[1, 3, 5, 7, 13, 15, 21, 29, 35, 39, 65, 87, 91, 105, 145, 195, 203, 273, 377, 435, 455, 523, 609, 1015, 1131, 1365, 1569, 1885, 2615, 2639, 3045, 3661, 5655, 6799, 7845, 7917, 10983, 13195, 15167, 18305, 20397, 33995, 39585, 45501, 47593, 54915, 75835, 101985, 106169, 142779, 197171, 227505, 237965, 318507, 530845, 591513, 713895, 985855, 1380197, 1592535, 2957565, 4140591, 6900985, 20702955]

約数ペア:

[(1, 20702955), (3, 6900985), (5, 4140591), (7, 2957565), (13, 1592535), (15, 1380197), (21, 985855), (29, 713895), (35, 591513), (39, 530845), (65, 318507), (87, 237965), (91, 227505), (105, 197171), (145, 142779), (195, 106169), (203, 101985), (273, 75835), (377, 54915), (435, 47593), (455, 45501), (523, 39585), (609, 33995), (1015, 20397), (1131, 18305), (1365, 15167), (1569, 13195), (1885, 10983), (2615, 7917), (2639, 7845), (3045, 6799), (3661, 5655)]