19875780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12269}}^1$

素因数の和:12290

約数の個数: 60

約数和(自身を含む): 62356140

約数和(自身を除く): 42480360

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12269, 24538, 36807, 49076, 61345, 73614, 110421, 122690, 147228, 184035, 220842, 245380, 331263, 368070, 441684, 552105, 662526, 736140, 993789, 1104210, 1325052, 1656315, 1987578, 2208420, 3312630, 3975156, 4968945, 6625260, 9937890, 19875780]

約数ペア:

[(1, 19875780), (2, 9937890), (3, 6625260), (4, 4968945), (5, 3975156), (6, 3312630), (9, 2208420), (10, 1987578), (12, 1656315), (15, 1325052), (18, 1104210), (20, 993789), (27, 736140), (30, 662526), (36, 552105), (45, 441684), (54, 368070), (60, 331263), (81, 245380), (90, 220842), (108, 184035), (135, 147228), (162, 122690), (180, 110421), (270, 73614), (324, 61345), (405, 49076), (540, 36807), (810, 24538), (1620, 12269)]