20994840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2011}}^1$

素因数の和:2057

約数の個数: 96

約数和(自身を含む): 70621200

約数和(自身を除く): 49626360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 29, 30, 36, 40, 45, 58, 60, 72, 87, 90, 116, 120, 145, 174, 180, 232, 261, 290, 348, 360, 435, 522, 580, 696, 870, 1044, 1160, 1305, 1740, 2011, 2088, 2610, 3480, 4022, 5220, 6033, 8044, 10055, 10440, 12066, 16088, 18099, 20110, 24132, 30165, 36198, 40220, 48264, 58319, 60330, 72396, 80440, 90495, 116638, 120660, 144792, 174957, 180990, 233276, 241320, 291595, 349914, 361980, 466552, 524871, 583190, 699828, 723960, 874785, 1049742, 1166380, 1399656, 1749570, 2099484, 2332760, 2624355, 3499140, 4198968, 5248710, 6998280, 10497420, 20994840]

約数ペア:

[(1, 20994840), (2, 10497420), (3, 6998280), (4, 5248710), (5, 4198968), (6, 3499140), (8, 2624355), (9, 2332760), (10, 2099484), (12, 1749570), (15, 1399656), (18, 1166380), (20, 1049742), (24, 874785), (29, 723960), (30, 699828), (36, 583190), (40, 524871), (45, 466552), (58, 361980), (60, 349914), (72, 291595), (87, 241320), (90, 233276), (116, 180990), (120, 174957), (145, 144792), (174, 120660), (180, 116638), (232, 90495), (261, 80440), (290, 72396), (348, 60330), (360, 58319), (435, 48264), (522, 40220), (580, 36198), (696, 30165), (870, 24132), (1044, 20110), (1160, 18099), (1305, 16088), (1740, 12066), (2011, 10440), (2088, 10055), (2610, 8044), (3480, 6033), (4022, 5220)]