20973953

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{911}}^1$

素因数の和:965

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 8443519

約数列:

[1, 7, 11, 13, 23, 77, 91, 143, 161, 253, 299, 911, 1001, 1771, 2093, 3289, 6377, 10021, 11843, 20953, 23023, 70147, 82901, 130273, 146671, 230483, 272389, 911911, 1613381, 1906723, 2996279, 20973953]

約数ペア:

[(1, 20973953), (7, 2996279), (11, 1906723), (13, 1613381), (23, 911911), (77, 272389), (91, 230483), (143, 146671), (161, 130273), (253, 82901), (299, 70147), (911, 23023), (1001, 20953), (1771, 11843), (2093, 10021), (3289, 6377)]