20531210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 25087990

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 43, 70, 86, 95, 133, 190, 215, 266, 301, 359, 430, 602, 665, 718, 817, 1330, 1505, 1634, 1795, 2513, 3010, 3590, 4085, 5026, 5719, 6821, 8170, 11438, 12565, 13642, 15437, 25130, 28595, 30874, 34105, 47747, 57190, 68210, 77185, 95494, 108059, 154370, 216118, 238735, 293303, 477470, 540295, 586606, 1080590, 1466515, 2053121, 2933030, 4106242, 10265605, 20531210]

約数ペア:

[(1, 20531210), (2, 10265605), (5, 4106242), (7, 2933030), (10, 2053121), (14, 1466515), (19, 1080590), (35, 586606), (38, 540295), (43, 477470), (70, 293303), (86, 238735), (95, 216118), (133, 154370), (190, 108059), (215, 95494), (266, 77185), (301, 68210), (359, 57190), (430, 47747), (602, 34105), (665, 30874), (718, 28595), (817, 25130), (1330, 15437), (1505, 13642), (1634, 12565), (1795, 11438), (2513, 8170), (3010, 6821), (3590, 5719), (4085, 5026)]