18961931877

素因数分解:

$3^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{641}}^1\times {\mathrm{2467}}^1$

素因数の和:3689

約数の個数: 32

約数和(自身を含む): 29001882624

約数和(自身を除く): 10039950747

約数列:

[1, 3, 7, 21, 571, 641, 1713, 1923, 2467, 3997, 4487, 7401, 11991, 13461, 17269, 51807, 366011, 1098033, 1408657, 1581347, 2562077, 4225971, 4744041, 7686231, 9860599, 11069429, 29581797, 33208287, 902949137, 2708847411, 6320643959, 18961931877]

約数ペア:

[(1, 18961931877), (3, 6320643959), (7, 2708847411), (21, 902949137), (571, 33208287), (641, 29581797), (1713, 11069429), (1923, 9860599), (2467, 7686231), (3997, 4744041), (4487, 4225971), (7401, 2562077), (11991, 1581347), (13461, 1408657), (17269, 1098033), (51807, 366011)]