21035665

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 30046464

約数和(自身を除く): 9010799

約数列:

[1, 5, 7, 35, 41, 107, 137, 205, 287, 535, 685, 749, 959, 1435, 3745, 4387, 4795, 5617, 14659, 21935, 28085, 30709, 39319, 73295, 102613, 153545, 196595, 513065, 601019, 3005095, 4207133, 21035665]

約数ペア:

[(1, 21035665), (5, 4207133), (7, 3005095), (35, 601019), (41, 513065), (107, 196595), (137, 153545), (205, 102613), (287, 73295), (535, 39319), (685, 30709), (749, 28085), (959, 21935), (1435, 14659), (3745, 5617), (4387, 4795)]