28981980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2729}}^1$

素因数の和:2803

約数の個数: 72

約数和(自身を含む): 89434800

約数和(自身を除く): 60452820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 59, 60, 90, 118, 177, 180, 236, 295, 354, 531, 590, 708, 885, 1062, 1180, 1770, 2124, 2655, 2729, 3540, 5310, 5458, 8187, 10620, 10916, 13645, 16374, 24561, 27290, 32748, 40935, 49122, 54580, 81870, 98244, 122805, 161011, 163740, 245610, 322022, 483033, 491220, 644044, 805055, 966066, 1449099, 1610110, 1932132, 2415165, 2898198, 3220220, 4830330, 5796396, 7245495, 9660660, 14490990, 28981980]

約数ペア:

[(1, 28981980), (2, 14490990), (3, 9660660), (4, 7245495), (5, 5796396), (6, 4830330), (9, 3220220), (10, 2898198), (12, 2415165), (15, 1932132), (18, 1610110), (20, 1449099), (30, 966066), (36, 805055), (45, 644044), (59, 491220), (60, 483033), (90, 322022), (118, 245610), (177, 163740), (180, 161011), (236, 122805), (295, 98244), (354, 81870), (531, 54580), (590, 49122), (708, 40935), (885, 32748), (1062, 27290), (1180, 24561), (1770, 16374), (2124, 13645), (2655, 10916), (2729, 10620), (3540, 8187), (5310, 5458)]