21104440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3967}}^1$

素因数の和:4004

約数の個数: 64

約数和(自身を含む): 57139200

約数和(自身を除く): 36034760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 3967, 5320, 7934, 15868, 19835, 27769, 31736, 39670, 55538, 75373, 79340, 111076, 138845, 150746, 158680, 222152, 277690, 301492, 376865, 527611, 555380, 602984, 753730, 1055222, 1110760, 1507460, 2110444, 2638055, 3014920, 4220888, 5276110, 10552220, 21104440]

約数ペア:

[(1, 21104440), (2, 10552220), (4, 5276110), (5, 4220888), (7, 3014920), (8, 2638055), (10, 2110444), (14, 1507460), (19, 1110760), (20, 1055222), (28, 753730), (35, 602984), (38, 555380), (40, 527611), (56, 376865), (70, 301492), (76, 277690), (95, 222152), (133, 158680), (140, 150746), (152, 138845), (190, 111076), (266, 79340), (280, 75373), (380, 55538), (532, 39670), (665, 31736), (760, 27769), (1064, 19835), (1330, 15868), (2660, 7934), (3967, 5320)]