21546420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 144

約数和(自身を含む): 72578688

約数和(自身を除く): 51032268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 58, 60, 61, 70, 84, 87, 105, 116, 122, 140, 145, 174, 183, 203, 210, 244, 290, 305, 348, 366, 406, 420, 427, 435, 580, 609, 610, 732, 812, 841, 854, 870, 915, 1015, 1218, 1220, 1281, 1682, 1708, 1740, 1769, 1830, 2030, 2135, 2436, 2523, 2562, 3045, 3364, 3538, 3660, 4060, 4205, 4270, 5046, 5124, 5307, 5887, 6090, 6405, 7076, 8410, 8540, 8845, 10092, 10614, 11774, 12180, 12383, 12615, 12810, 16820, 17661, 17690, 21228, 23548, 24766, 25230, 25620, 26535, 29435, 35322, 35380, 37149, 49532, 50460, 51301, 53070, 58870, 61915, 70644, 74298, 88305, 102602, 106140, 117740, 123830, 148596, 153903, 176610, 185745, 205204, 247660, 256505, 307806, 353220, 359107, 371490, 513010, 615612, 718214, 742980, 769515, 1026020, 1077321, 1436428, 1539030, 1795535, 2154642, 3078060, 3591070, 4309284, 5386605, 7182140, 10773210, 21546420]

約数ペア:

[(1, 21546420), (2, 10773210), (3, 7182140), (4, 5386605), (5, 4309284), (6, 3591070), (7, 3078060), (10, 2154642), (12, 1795535), (14, 1539030), (15, 1436428), (20, 1077321), (21, 1026020), (28, 769515), (29, 742980), (30, 718214), (35, 615612), (42, 513010), (58, 371490), (60, 359107), (61, 353220), (70, 307806), (84, 256505), (87, 247660), (105, 205204), (116, 185745), (122, 176610), (140, 153903), (145, 148596), (174, 123830), (183, 117740), (203, 106140), (210, 102602), (244, 88305), (290, 74298), (305, 70644), (348, 61915), (366, 58870), (406, 53070), (420, 51301), (427, 50460), (435, 49532), (580, 37149), (609, 35380), (610, 35322), (732, 29435), (812, 26535), (841, 25620), (854, 25230), (870, 24766), (915, 23548), (1015, 21228), (1218, 17690), (1220, 17661), (1281, 16820), (1682, 12810), (1708, 12615), (1740, 12383), (1769, 12180), (1830, 11774), (2030, 10614), (2135, 10092), (2436, 8845), (2523, 8540), (2562, 8410), (3045, 7076), (3364, 6405), (3538, 6090), (3660, 5887), (4060, 5307), (4205, 5124), (4270, 5046)]