21042835

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7987565

約数列:

[1, 5, 11, 29, 55, 79, 145, 167, 319, 395, 835, 869, 1595, 1837, 2291, 4345, 4843, 9185, 11455, 13193, 24215, 25201, 53273, 65965, 126005, 145123, 266365, 382597, 725615, 1912985, 4208567, 21042835]

約数ペア:

[(1, 21042835), (5, 4208567), (11, 1912985), (29, 725615), (55, 382597), (79, 266365), (145, 145123), (167, 126005), (319, 65965), (395, 53273), (835, 25201), (869, 24215), (1595, 13193), (1837, 11455), (2291, 9185), (4345, 4843)]