21991860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{383}}^1$

素因数の和:438

約数の個数: 144

約数和(自身を含む): 75479040

約数和(自身を除く): 53487180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 29, 30, 33, 36, 44, 45, 55, 58, 60, 66, 87, 90, 99, 110, 116, 132, 145, 165, 174, 180, 198, 220, 261, 290, 319, 330, 348, 383, 396, 435, 495, 522, 580, 638, 660, 766, 870, 957, 990, 1044, 1149, 1276, 1305, 1532, 1595, 1740, 1914, 1915, 1980, 2298, 2610, 2871, 3190, 3447, 3828, 3830, 4213, 4596, 4785, 5220, 5742, 5745, 6380, 6894, 7660, 8426, 9570, 11107, 11484, 11490, 12639, 13788, 14355, 16852, 17235, 19140, 21065, 22214, 22980, 25278, 28710, 33321, 34470, 37917, 42130, 44428, 50556, 55535, 57420, 63195, 66642, 68940, 75834, 84260, 99963, 111070, 122177, 126390, 133284, 151668, 166605, 189585, 199926, 222140, 244354, 252780, 333210, 366531, 379170, 399852, 488708, 499815, 610885, 666420, 733062, 758340, 999630, 1099593, 1221770, 1466124, 1832655, 1999260, 2199186, 2443540, 3665310, 4398372, 5497965, 7330620, 10995930, 21991860]

約数ペア:

[(1, 21991860), (2, 10995930), (3, 7330620), (4, 5497965), (5, 4398372), (6, 3665310), (9, 2443540), (10, 2199186), (11, 1999260), (12, 1832655), (15, 1466124), (18, 1221770), (20, 1099593), (22, 999630), (29, 758340), (30, 733062), (33, 666420), (36, 610885), (44, 499815), (45, 488708), (55, 399852), (58, 379170), (60, 366531), (66, 333210), (87, 252780), (90, 244354), (99, 222140), (110, 199926), (116, 189585), (132, 166605), (145, 151668), (165, 133284), (174, 126390), (180, 122177), (198, 111070), (220, 99963), (261, 84260), (290, 75834), (319, 68940), (330, 66642), (348, 63195), (383, 57420), (396, 55535), (435, 50556), (495, 44428), (522, 42130), (580, 37917), (638, 34470), (660, 33321), (766, 28710), (870, 25278), (957, 22980), (990, 22214), (1044, 21065), (1149, 19140), (1276, 17235), (1305, 16852), (1532, 14355), (1595, 13788), (1740, 12639), (1914, 11490), (1915, 11484), (1980, 11107), (2298, 9570), (2610, 8426), (2871, 7660), (3190, 6894), (3447, 6380), (3828, 5745), (3830, 5742), (4213, 5220), (4596, 4785)]