81920580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{195049}}^1$

素因数の和:195068

約数の個数: 48

約数和(自身を含む): 262147200

約数和(自身を除く): 180226620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 195049, 390098, 585147, 780196, 975245, 1170294, 1365343, 1950490, 2340588, 2730686, 2925735, 3900980, 4096029, 5461372, 5851470, 6826715, 8192058, 11702940, 13653430, 16384116, 20480145, 27306860, 40960290, 81920580]

約数ペア:

[(1, 81920580), (2, 40960290), (3, 27306860), (4, 20480145), (5, 16384116), (6, 13653430), (7, 11702940), (10, 8192058), (12, 6826715), (14, 5851470), (15, 5461372), (20, 4096029), (21, 3900980), (28, 2925735), (30, 2730686), (35, 2340588), (42, 1950490), (60, 1365343), (70, 1170294), (84, 975245), (105, 780196), (140, 585147), (210, 390098), (420, 195049)]