81193140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64439}}^1$

素因数の和:64461

約数の個数: 72

約数和(自身を含む): 281473920

約数和(自身を除く): 200280780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64439, 128878, 193317, 257756, 322195, 386634, 451073, 579951, 644390, 773268, 902146, 966585, 1159902, 1288780, 1353219, 1804292, 1933170, 2255365, 2319804, 2706438, 2899755, 3866340, 4059657, 4510730, 5412876, 5799510, 6766095, 8119314, 9021460, 11599020, 13532190, 16238628, 20298285, 27064380, 40596570, 81193140]

約数ペア:

[(1, 81193140), (2, 40596570), (3, 27064380), (4, 20298285), (5, 16238628), (6, 13532190), (7, 11599020), (9, 9021460), (10, 8119314), (12, 6766095), (14, 5799510), (15, 5412876), (18, 4510730), (20, 4059657), (21, 3866340), (28, 2899755), (30, 2706438), (35, 2319804), (36, 2255365), (42, 1933170), (45, 1804292), (60, 1353219), (63, 1288780), (70, 1159902), (84, 966585), (90, 902146), (105, 773268), (126, 644390), (140, 579951), (180, 451073), (210, 386634), (252, 322195), (315, 257756), (420, 193317), (630, 128878), (1260, 64439)]