19534240

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1009}}^1$

素因数の和:1046

約数の個数: 72

約数和(自身を含む): 50776740

約数和(自身を除く): 31242500

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1009, 1210, 1760, 1936, 2018, 2420, 3872, 4036, 4840, 5045, 8072, 9680, 10090, 11099, 16144, 19360, 20180, 22198, 32288, 40360, 44396, 55495, 80720, 88792, 110990, 122089, 161440, 177584, 221980, 244178, 355168, 443960, 488356, 610445, 887920, 976712, 1220890, 1775840, 1953424, 2441780, 3906848, 4883560, 9767120, 19534240]

約数ペア:

[(1, 19534240), (2, 9767120), (4, 4883560), (5, 3906848), (8, 2441780), (10, 1953424), (11, 1775840), (16, 1220890), (20, 976712), (22, 887920), (32, 610445), (40, 488356), (44, 443960), (55, 355168), (80, 244178), (88, 221980), (110, 177584), (121, 161440), (160, 122089), (176, 110990), (220, 88792), (242, 80720), (352, 55495), (440, 44396), (484, 40360), (605, 32288), (880, 22198), (968, 20180), (1009, 19360), (1210, 16144), (1760, 11099), (1936, 10090), (2018, 9680), (2420, 8072), (3872, 5045), (4036, 4840)]