81109280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{521}}^1$

素因数の和:682

約数の個数: 96

約数和(自身を含む): 220993920

約数和(自身を除く): 139884640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 139, 140, 160, 224, 278, 280, 521, 556, 560, 695, 973, 1042, 1112, 1120, 1390, 1946, 2084, 2224, 2605, 2780, 3647, 3892, 4168, 4448, 4865, 5210, 5560, 7294, 7784, 8336, 9730, 10420, 11120, 14588, 15568, 16672, 18235, 19460, 20840, 22240, 29176, 31136, 36470, 38920, 41680, 58352, 72419, 72940, 77840, 83360, 116704, 144838, 145880, 155680, 289676, 291760, 362095, 506933, 579352, 583520, 724190, 1013866, 1158704, 1448380, 2027732, 2317408, 2534665, 2896760, 4055464, 5069330, 5793520, 8110928, 10138660, 11587040, 16221856, 20277320, 40554640, 81109280]

約数ペア:

[(1, 81109280), (2, 40554640), (4, 20277320), (5, 16221856), (7, 11587040), (8, 10138660), (10, 8110928), (14, 5793520), (16, 5069330), (20, 4055464), (28, 2896760), (32, 2534665), (35, 2317408), (40, 2027732), (56, 1448380), (70, 1158704), (80, 1013866), (112, 724190), (139, 583520), (140, 579352), (160, 506933), (224, 362095), (278, 291760), (280, 289676), (521, 155680), (556, 145880), (560, 144838), (695, 116704), (973, 83360), (1042, 77840), (1112, 72940), (1120, 72419), (1390, 58352), (1946, 41680), (2084, 38920), (2224, 36470), (2605, 31136), (2780, 29176), (3647, 22240), (3892, 20840), (4168, 19460), (4448, 18235), (4865, 16672), (5210, 15568), (5560, 14588), (7294, 11120), (7784, 10420), (8336, 9730)]