20919540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{2309}}^1$

素因数の和:2472

約数の個数: 48

約数和(自身を含む): 58988160

約数和(自身を除く): 38068620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 151, 302, 453, 604, 755, 906, 1510, 1812, 2265, 2309, 3020, 4530, 4618, 6927, 9060, 9236, 11545, 13854, 23090, 27708, 34635, 46180, 69270, 138540, 348659, 697318, 1045977, 1394636, 1743295, 2091954, 3486590, 4183908, 5229885, 6973180, 10459770, 20919540]

約数ペア:

[(1, 20919540), (2, 10459770), (3, 6973180), (4, 5229885), (5, 4183908), (6, 3486590), (10, 2091954), (12, 1743295), (15, 1394636), (20, 1045977), (30, 697318), (60, 348659), (151, 138540), (302, 69270), (453, 46180), (604, 34635), (755, 27708), (906, 23090), (1510, 13854), (1812, 11545), (2265, 9236), (2309, 9060), (3020, 6927), (4530, 4618)]