21067485

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2549}}^1$

素因数の和:2605

約数の個数: 32

約数和(自身を含む): 36720000

約数和(自身を除く): 15652515

約数列:

[1, 3, 5, 15, 19, 29, 57, 87, 95, 145, 285, 435, 551, 1653, 2549, 2755, 7647, 8265, 12745, 38235, 48431, 73921, 145293, 221763, 242155, 369605, 726465, 1108815, 1404499, 4213497, 7022495, 21067485]

約数ペア:

[(1, 21067485), (3, 7022495), (5, 4213497), (15, 1404499), (19, 1108815), (29, 726465), (57, 369605), (87, 242155), (95, 221763), (145, 145293), (285, 73921), (435, 48431), (551, 38235), (1653, 12745), (2549, 8265), (2755, 7647)]