19958895

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:744

約数の個数: 48

約数和(自身を含む): 38417184

約数和(自身を除く): 18458289

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 61, 99, 165, 183, 305, 495, 549, 661, 671, 915, 1983, 2013, 2745, 3305, 3355, 5949, 6039, 7271, 9915, 10065, 21813, 29745, 30195, 36355, 40321, 65439, 109065, 120963, 201605, 327195, 362889, 443531, 604815, 1330593, 1814445, 2217655, 3991779, 6652965, 19958895]

約数ペア:

[(1, 19958895), (3, 6652965), (5, 3991779), (9, 2217655), (11, 1814445), (15, 1330593), (33, 604815), (45, 443531), (55, 362889), (61, 327195), (99, 201605), (165, 120963), (183, 109065), (305, 65439), (495, 40321), (549, 36355), (661, 30195), (671, 29745), (915, 21813), (1983, 10065), (2013, 9915), (2745, 7271), (3305, 6039), (3355, 5949)]