20981550

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{137}}^1\times {\mathrm{1021}}^1$

素因数の和:1173

約数の個数: 48

約数和(自身を含む): 52465392

約数和(自身を除く): 31483842

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 137, 150, 274, 411, 685, 822, 1021, 1370, 2042, 2055, 3063, 3425, 4110, 5105, 6126, 6850, 10210, 10275, 15315, 20550, 25525, 30630, 51050, 76575, 139877, 153150, 279754, 419631, 699385, 839262, 1398770, 2098155, 3496925, 4196310, 6993850, 10490775, 20981550]

約数ペア:

[(1, 20981550), (2, 10490775), (3, 6993850), (5, 4196310), (6, 3496925), (10, 2098155), (15, 1398770), (25, 839262), (30, 699385), (50, 419631), (75, 279754), (137, 153150), (150, 139877), (274, 76575), (411, 51050), (685, 30630), (822, 25525), (1021, 20550), (1370, 15315), (2042, 10275), (2055, 10210), (3063, 6850), (3425, 6126), (4110, 5105)]