20820840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:267

約数の個数: 128

約数和(自身を含む): 67046400

約数和(自身を除く): 46225560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 31, 40, 58, 60, 62, 87, 93, 116, 120, 124, 145, 155, 174, 186, 193, 232, 248, 290, 310, 348, 372, 386, 435, 465, 579, 580, 620, 696, 744, 772, 870, 899, 930, 965, 1158, 1160, 1240, 1544, 1740, 1798, 1860, 1930, 2316, 2697, 2895, 3480, 3596, 3720, 3860, 4495, 4632, 5394, 5597, 5790, 5983, 7192, 7720, 8990, 10788, 11194, 11580, 11966, 13485, 16791, 17949, 17980, 21576, 22388, 23160, 23932, 26970, 27985, 29915, 33582, 35898, 35960, 44776, 47864, 53940, 55970, 59830, 67164, 71796, 83955, 89745, 107880, 111940, 119660, 134328, 143592, 167910, 173507, 179490, 223880, 239320, 335820, 347014, 358980, 520521, 671640, 694028, 717960, 867535, 1041042, 1388056, 1735070, 2082084, 2602605, 3470140, 4164168, 5205210, 6940280, 10410420, 20820840]

約数ペア:

[(1, 20820840), (2, 10410420), (3, 6940280), (4, 5205210), (5, 4164168), (6, 3470140), (8, 2602605), (10, 2082084), (12, 1735070), (15, 1388056), (20, 1041042), (24, 867535), (29, 717960), (30, 694028), (31, 671640), (40, 520521), (58, 358980), (60, 347014), (62, 335820), (87, 239320), (93, 223880), (116, 179490), (120, 173507), (124, 167910), (145, 143592), (155, 134328), (174, 119660), (186, 111940), (193, 107880), (232, 89745), (248, 83955), (290, 71796), (310, 67164), (348, 59830), (372, 55970), (386, 53940), (435, 47864), (465, 44776), (579, 35960), (580, 35898), (620, 33582), (696, 29915), (744, 27985), (772, 26970), (870, 23932), (899, 23160), (930, 22388), (965, 21576), (1158, 17980), (1160, 17949), (1240, 16791), (1544, 13485), (1740, 11966), (1798, 11580), (1860, 11194), (1930, 10788), (2316, 8990), (2697, 7720), (2895, 7192), (3480, 5983), (3596, 5790), (3720, 5597), (3860, 5394), (4495, 4632)]