21945980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{9221}}^1$

素因数の和:9254

約数の個数: 48

約数和(自身を含む): 55774656

約数和(自身を除く): 33828676

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 9221, 18442, 36884, 46105, 64547, 92210, 129094, 156757, 184420, 258188, 313514, 322735, 627028, 645470, 783785, 1097299, 1290940, 1567570, 2194598, 3135140, 4389196, 5486495, 10972990, 21945980]

約数ペア:

[(1, 21945980), (2, 10972990), (4, 5486495), (5, 4389196), (7, 3135140), (10, 2194598), (14, 1567570), (17, 1290940), (20, 1097299), (28, 783785), (34, 645470), (35, 627028), (68, 322735), (70, 313514), (85, 258188), (119, 184420), (140, 156757), (170, 129094), (238, 92210), (340, 64547), (476, 46105), (595, 36884), (1190, 18442), (2380, 9221)]