20438990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{14293}}^1$

素因数の和:14324

約数の個数: 32

約数和(自身を含む): 43225056

約数和(自身を除く): 22786066

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 14293, 28586, 71465, 142930, 157223, 185809, 314446, 371618, 786115, 929045, 1572230, 1858090, 2043899, 4087798, 10219495, 20438990]

約数ペア:

[(1, 20438990), (2, 10219495), (5, 4087798), (10, 2043899), (11, 1858090), (13, 1572230), (22, 929045), (26, 786115), (55, 371618), (65, 314446), (110, 185809), (130, 157223), (143, 142930), (286, 71465), (715, 28586), (1430, 14293)]