21448980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{587}}^1$

素因数の和:638

約数の個数: 144

約数和(自身を含む): 77051520

約数和(自身を除く): 55602540

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 29, 30, 35, 36, 42, 45, 58, 60, 63, 70, 84, 87, 90, 105, 116, 126, 140, 145, 174, 180, 203, 210, 252, 261, 290, 315, 348, 406, 420, 435, 522, 580, 587, 609, 630, 812, 870, 1015, 1044, 1174, 1218, 1260, 1305, 1740, 1761, 1827, 2030, 2348, 2436, 2610, 2935, 3045, 3522, 3654, 4060, 4109, 5220, 5283, 5870, 6090, 7044, 7308, 8218, 8805, 9135, 10566, 11740, 12180, 12327, 16436, 17023, 17610, 18270, 20545, 21132, 24654, 26415, 34046, 35220, 36540, 36981, 41090, 49308, 51069, 52830, 61635, 68092, 73962, 82180, 85115, 102138, 105660, 119161, 123270, 147924, 153207, 170230, 184905, 204276, 238322, 246540, 255345, 306414, 340460, 357483, 369810, 476644, 510690, 595805, 612828, 714966, 739620, 766035, 1021380, 1072449, 1191610, 1429932, 1532070, 1787415, 2144898, 2383220, 3064140, 3574830, 4289796, 5362245, 7149660, 10724490, 21448980]

約数ペア:

[(1, 21448980), (2, 10724490), (3, 7149660), (4, 5362245), (5, 4289796), (6, 3574830), (7, 3064140), (9, 2383220), (10, 2144898), (12, 1787415), (14, 1532070), (15, 1429932), (18, 1191610), (20, 1072449), (21, 1021380), (28, 766035), (29, 739620), (30, 714966), (35, 612828), (36, 595805), (42, 510690), (45, 476644), (58, 369810), (60, 357483), (63, 340460), (70, 306414), (84, 255345), (87, 246540), (90, 238322), (105, 204276), (116, 184905), (126, 170230), (140, 153207), (145, 147924), (174, 123270), (180, 119161), (203, 105660), (210, 102138), (252, 85115), (261, 82180), (290, 73962), (315, 68092), (348, 61635), (406, 52830), (420, 51069), (435, 49308), (522, 41090), (580, 36981), (587, 36540), (609, 35220), (630, 34046), (812, 26415), (870, 24654), (1015, 21132), (1044, 20545), (1174, 18270), (1218, 17610), (1260, 17023), (1305, 16436), (1740, 12327), (1761, 12180), (1827, 11740), (2030, 10566), (2348, 9135), (2436, 8805), (2610, 8218), (2935, 7308), (3045, 7044), (3522, 6090), (3654, 5870), (4060, 5283), (4109, 5220)]