19666640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:229

約数の個数: 120

約数和(自身を含む): 55342440

約数和(自身を除く): 35675800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 49, 56, 58, 70, 80, 98, 112, 116, 140, 145, 173, 196, 203, 232, 245, 280, 290, 346, 392, 406, 464, 490, 560, 580, 692, 784, 812, 865, 980, 1015, 1160, 1211, 1384, 1421, 1624, 1730, 1960, 2030, 2320, 2422, 2768, 2842, 3248, 3460, 3920, 4060, 4844, 5017, 5684, 6055, 6920, 7105, 8120, 8477, 9688, 10034, 11368, 12110, 13840, 14210, 16240, 16954, 19376, 20068, 22736, 24220, 25085, 28420, 33908, 35119, 40136, 42385, 48440, 50170, 56840, 67816, 70238, 80272, 84770, 96880, 100340, 113680, 135632, 140476, 169540, 175595, 200680, 245833, 280952, 339080, 351190, 401360, 491666, 561904, 678160, 702380, 983332, 1229165, 1404760, 1966664, 2458330, 2809520, 3933328, 4916660, 9833320, 19666640]

約数ペア:

[(1, 19666640), (2, 9833320), (4, 4916660), (5, 3933328), (7, 2809520), (8, 2458330), (10, 1966664), (14, 1404760), (16, 1229165), (20, 983332), (28, 702380), (29, 678160), (35, 561904), (40, 491666), (49, 401360), (56, 351190), (58, 339080), (70, 280952), (80, 245833), (98, 200680), (112, 175595), (116, 169540), (140, 140476), (145, 135632), (173, 113680), (196, 100340), (203, 96880), (232, 84770), (245, 80272), (280, 70238), (290, 67816), (346, 56840), (392, 50170), (406, 48440), (464, 42385), (490, 40136), (560, 35119), (580, 33908), (692, 28420), (784, 25085), (812, 24220), (865, 22736), (980, 20068), (1015, 19376), (1160, 16954), (1211, 16240), (1384, 14210), (1421, 13840), (1624, 12110), (1730, 11368), (1960, 10034), (2030, 9688), (2320, 8477), (2422, 8120), (2768, 7105), (2842, 6920), (3248, 6055), (3460, 5684), (3920, 5017), (4060, 4844)]