20286540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2621}}^1$

素因数の和:2679

約数の個数: 72

約数和(自身を含む): 62990928

約数和(自身を除く): 42704388

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 2621, 3870, 5242, 7740, 7863, 10484, 13105, 15726, 23589, 26210, 31452, 39315, 47178, 52420, 78630, 94356, 112703, 117945, 157260, 225406, 235890, 338109, 450812, 471780, 563515, 676218, 1014327, 1127030, 1352436, 1690545, 2028654, 2254060, 3381090, 4057308, 5071635, 6762180, 10143270, 20286540]

約数ペア:

[(1, 20286540), (2, 10143270), (3, 6762180), (4, 5071635), (5, 4057308), (6, 3381090), (9, 2254060), (10, 2028654), (12, 1690545), (15, 1352436), (18, 1127030), (20, 1014327), (30, 676218), (36, 563515), (43, 471780), (45, 450812), (60, 338109), (86, 235890), (90, 225406), (129, 157260), (172, 117945), (180, 112703), (215, 94356), (258, 78630), (387, 52420), (430, 47178), (516, 39315), (645, 31452), (774, 26210), (860, 23589), (1290, 15726), (1548, 13105), (1935, 10484), (2580, 7863), (2621, 7740), (3870, 5242)]