1987700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:177

約数の個数: 72

約数和(自身を含む): 5103840

約数和(自身を除く): 3116140

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 130, 139, 143, 220, 260, 275, 278, 286, 325, 550, 556, 572, 650, 695, 715, 1100, 1300, 1390, 1430, 1529, 1807, 2780, 2860, 3058, 3475, 3575, 3614, 6116, 6950, 7150, 7228, 7645, 9035, 13900, 14300, 15290, 18070, 19877, 30580, 36140, 38225, 39754, 45175, 76450, 79508, 90350, 99385, 152900, 180700, 198770, 397540, 496925, 993850, 1987700]

約数ペア:

[(1, 1987700), (2, 993850), (4, 496925), (5, 397540), (10, 198770), (11, 180700), (13, 152900), (20, 99385), (22, 90350), (25, 79508), (26, 76450), (44, 45175), (50, 39754), (52, 38225), (55, 36140), (65, 30580), (100, 19877), (110, 18070), (130, 15290), (139, 14300), (143, 13900), (220, 9035), (260, 7645), (275, 7228), (278, 7150), (286, 6950), (325, 6116), (550, 3614), (556, 3575), (572, 3475), (650, 3058), (695, 2860), (715, 2780), (1100, 1807), (1300, 1529), (1390, 1430)]