19889650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{43}}^1$

素因数の和:124

約数の個数: 72

約数和(自身を含む): 42769584

約数和(自身を除く): 22879934

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 43, 50, 55, 58, 86, 110, 145, 215, 275, 290, 319, 430, 473, 550, 638, 725, 841, 946, 1075, 1247, 1450, 1595, 1682, 2150, 2365, 2494, 3190, 4205, 4730, 6235, 7975, 8410, 9251, 11825, 12470, 13717, 15950, 18502, 21025, 23650, 27434, 31175, 36163, 42050, 46255, 62350, 68585, 72326, 92510, 137170, 180815, 231275, 342925, 361630, 397793, 462550, 685850, 795586, 904075, 1808150, 1988965, 3977930, 9944825, 19889650]

約数ペア:

[(1, 19889650), (2, 9944825), (5, 3977930), (10, 1988965), (11, 1808150), (22, 904075), (25, 795586), (29, 685850), (43, 462550), (50, 397793), (55, 361630), (58, 342925), (86, 231275), (110, 180815), (145, 137170), (215, 92510), (275, 72326), (290, 68585), (319, 62350), (430, 46255), (473, 42050), (550, 36163), (638, 31175), (725, 27434), (841, 23650), (946, 21025), (1075, 18502), (1247, 15950), (1450, 13717), (1595, 12470), (1682, 11825), (2150, 9251), (2365, 8410), (2494, 7975), (3190, 6235), (4205, 4730)]