728420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1$

素因数の和:81

約数の個数: 72

約数和(自身を含む): 1966272

約数和(自身を除く): 1237852

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 43, 44, 55, 70, 77, 86, 110, 121, 140, 154, 172, 215, 220, 242, 301, 308, 385, 430, 473, 484, 602, 605, 770, 847, 860, 946, 1204, 1210, 1505, 1540, 1694, 1892, 2365, 2420, 3010, 3311, 3388, 4235, 4730, 5203, 6020, 6622, 8470, 9460, 10406, 13244, 16555, 16940, 20812, 26015, 33110, 36421, 52030, 66220, 72842, 104060, 145684, 182105, 364210, 728420]

約数ペア:

[(1, 728420), (2, 364210), (4, 182105), (5, 145684), (7, 104060), (10, 72842), (11, 66220), (14, 52030), (20, 36421), (22, 33110), (28, 26015), (35, 20812), (43, 16940), (44, 16555), (55, 13244), (70, 10406), (77, 9460), (86, 8470), (110, 6622), (121, 6020), (140, 5203), (154, 4730), (172, 4235), (215, 3388), (220, 3311), (242, 3010), (301, 2420), (308, 2365), (385, 1892), (430, 1694), (473, 1540), (484, 1505), (602, 1210), (605, 1204), (770, 946), (847, 860)]