1838980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 4544064

約数和(自身を除く): 2705084

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 643, 715, 1286, 1430, 2572, 2860, 3215, 6430, 7073, 8359, 12860, 14146, 16718, 28292, 33436, 35365, 41795, 70730, 83590, 91949, 141460, 167180, 183898, 367796, 459745, 919490, 1838980]

約数ペア:

[(1, 1838980), (2, 919490), (4, 459745), (5, 367796), (10, 183898), (11, 167180), (13, 141460), (20, 91949), (22, 83590), (26, 70730), (44, 41795), (52, 35365), (55, 33436), (65, 28292), (110, 16718), (130, 14146), (143, 12860), (220, 8359), (260, 7073), (286, 6430), (572, 3215), (643, 2860), (715, 2572), (1286, 1430)]