21885185

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 31256064

約数和(自身を除く): 9370879

約数列:

[1, 5, 7, 35, 41, 101, 151, 205, 287, 505, 707, 755, 1057, 1435, 3535, 4141, 5285, 6191, 15251, 20705, 28987, 30955, 43337, 76255, 106757, 144935, 216685, 533785, 625291, 3126455, 4377037, 21885185]

約数ペア:

[(1, 21885185), (5, 4377037), (7, 3126455), (35, 625291), (41, 533785), (101, 216685), (151, 144935), (205, 106757), (287, 76255), (505, 43337), (707, 30955), (755, 28987), (1057, 20705), (1435, 15251), (3535, 6191), (4141, 5285)]