1239980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{521}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 3157056

約数和(自身を除く): 1917076

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 521, 595, 1042, 1190, 2084, 2380, 2605, 3647, 5210, 7294, 8857, 10420, 14588, 17714, 18235, 35428, 36470, 44285, 61999, 72940, 88570, 123998, 177140, 247996, 309995, 619990, 1239980]

約数ペア:

[(1, 1239980), (2, 619990), (4, 309995), (5, 247996), (7, 177140), (10, 123998), (14, 88570), (17, 72940), (20, 61999), (28, 44285), (34, 36470), (35, 35428), (68, 18235), (70, 17714), (85, 14588), (119, 10420), (140, 8857), (170, 7294), (238, 5210), (340, 3647), (476, 2605), (521, 2380), (595, 2084), (1042, 1190)]