31784060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{20639}}^1$

素因数の和:20666

約数の個数: 48

約数和(自身を含む): 83220480

約数和(自身を除く): 51436420

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 20639, 41278, 82556, 103195, 144473, 206390, 227029, 288946, 412780, 454058, 577892, 722365, 908116, 1135145, 1444730, 1589203, 2270290, 2889460, 3178406, 4540580, 6356812, 7946015, 15892030, 31784060]

約数ペア:

[(1, 31784060), (2, 15892030), (4, 7946015), (5, 6356812), (7, 4540580), (10, 3178406), (11, 2889460), (14, 2270290), (20, 1589203), (22, 1444730), (28, 1135145), (35, 908116), (44, 722365), (55, 577892), (70, 454058), (77, 412780), (110, 288946), (140, 227029), (154, 206390), (220, 144473), (308, 103195), (385, 82556), (770, 41278), (1540, 20639)]