40554640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{521}}^1$

素因数の和:680

約数の個数: 80

約数和(自身を含む): 108743040

約数和(自身を除く): 68188400

約数列:

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

約数ペア:

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