21077520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2833}}^1$

素因数の和:2880

約数の個数: 80

約数和(自身を含む): 67471872

約数和(自身を除く): 46394352

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 2833, 3720, 5666, 7440, 8499, 11332, 14165, 16998, 22664, 28330, 33996, 42495, 45328, 56660, 67992, 84990, 87823, 113320, 135984, 169980, 175646, 226640, 263469, 339960, 351292, 439115, 526938, 679920, 702584, 878230, 1053876, 1317345, 1405168, 1756460, 2107752, 2634690, 3512920, 4215504, 5269380, 7025840, 10538760, 21077520]

約数ペア:

[(1, 21077520), (2, 10538760), (3, 7025840), (4, 5269380), (5, 4215504), (6, 3512920), (8, 2634690), (10, 2107752), (12, 1756460), (15, 1405168), (16, 1317345), (20, 1053876), (24, 878230), (30, 702584), (31, 679920), (40, 526938), (48, 439115), (60, 351292), (62, 339960), (80, 263469), (93, 226640), (120, 175646), (124, 169980), (155, 135984), (186, 113320), (240, 87823), (248, 84990), (310, 67992), (372, 56660), (465, 45328), (496, 42495), (620, 33996), (744, 28330), (930, 22664), (1240, 16998), (1488, 14165), (1860, 11332), (2480, 8499), (2833, 7440), (3720, 5666)]