287980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1$

素因数の和:55

約数の個数: 72

約数和(自身を含む): 804384

約数和(自身を除く): 516404

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 55, 68, 70, 77, 85, 110, 119, 121, 140, 154, 170, 187, 220, 238, 242, 308, 340, 374, 385, 476, 484, 595, 605, 748, 770, 847, 935, 1190, 1210, 1309, 1540, 1694, 1870, 2057, 2380, 2420, 2618, 3388, 3740, 4114, 4235, 5236, 6545, 8228, 8470, 10285, 13090, 14399, 16940, 20570, 26180, 28798, 41140, 57596, 71995, 143990, 287980]

約数ペア:

[(1, 287980), (2, 143990), (4, 71995), (5, 57596), (7, 41140), (10, 28798), (11, 26180), (14, 20570), (17, 16940), (20, 14399), (22, 13090), (28, 10285), (34, 8470), (35, 8228), (44, 6545), (55, 5236), (68, 4235), (70, 4114), (77, 3740), (85, 3388), (110, 2618), (119, 2420), (121, 2380), (140, 2057), (154, 1870), (170, 1694), (187, 1540), (220, 1309), (238, 1210), (242, 1190), (308, 935), (340, 847), (374, 770), (385, 748), (476, 605), (484, 595)]