19664920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:289

約数の個数: 96

約数和(自身を含む): 51710400

約数和(自身を除く): 32045480

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 121, 136, 170, 187, 220, 239, 242, 340, 374, 440, 478, 484, 605, 680, 748, 935, 956, 968, 1195, 1210, 1496, 1870, 1912, 2057, 2390, 2420, 2629, 3740, 4063, 4114, 4780, 4840, 5258, 7480, 8126, 8228, 9560, 10285, 10516, 13145, 16252, 16456, 20315, 20570, 21032, 26290, 28919, 32504, 40630, 41140, 44693, 52580, 57838, 81260, 82280, 89386, 105160, 115676, 144595, 162520, 178772, 223465, 231352, 289190, 357544, 446930, 491623, 578380, 893860, 983246, 1156760, 1787720, 1966492, 2458115, 3932984, 4916230, 9832460, 19664920]

約数ペア:

[(1, 19664920), (2, 9832460), (4, 4916230), (5, 3932984), (8, 2458115), (10, 1966492), (11, 1787720), (17, 1156760), (20, 983246), (22, 893860), (34, 578380), (40, 491623), (44, 446930), (55, 357544), (68, 289190), (85, 231352), (88, 223465), (110, 178772), (121, 162520), (136, 144595), (170, 115676), (187, 105160), (220, 89386), (239, 82280), (242, 81260), (340, 57838), (374, 52580), (440, 44693), (478, 41140), (484, 40630), (605, 32504), (680, 28919), (748, 26290), (935, 21032), (956, 20570), (968, 20315), (1195, 16456), (1210, 16252), (1496, 13145), (1870, 10516), (1912, 10285), (2057, 9560), (2390, 8228), (2420, 8126), (2629, 7480), (3740, 5258), (4063, 4840), (4114, 4780)]