21254940

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5623}}^1$

素因数の和:5648

約数の個数: 96

約数和(自身を含む): 75586560

約数和(自身を除く): 54331620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5623, 11246, 16869, 22492, 28115, 33738, 39361, 50607, 56230, 67476, 78722, 84345, 101214, 112460, 118083, 151821, 157444, 168690, 196805, 202428, 236166, 253035, 303642, 337380, 354249, 393610, 472332, 506070, 590415, 607284, 708498, 759105, 787220, 1012140, 1062747, 1180830, 1416996, 1518210, 1771245, 2125494, 2361660, 3036420, 3542490, 4250988, 5313735, 7084980, 10627470, 21254940]

約数ペア:

[(1, 21254940), (2, 10627470), (3, 7084980), (4, 5313735), (5, 4250988), (6, 3542490), (7, 3036420), (9, 2361660), (10, 2125494), (12, 1771245), (14, 1518210), (15, 1416996), (18, 1180830), (20, 1062747), (21, 1012140), (27, 787220), (28, 759105), (30, 708498), (35, 607284), (36, 590415), (42, 506070), (45, 472332), (54, 393610), (60, 354249), (63, 337380), (70, 303642), (84, 253035), (90, 236166), (105, 202428), (108, 196805), (126, 168690), (135, 157444), (140, 151821), (180, 118083), (189, 112460), (210, 101214), (252, 84345), (270, 78722), (315, 67476), (378, 56230), (420, 50607), (540, 39361), (630, 33738), (756, 28115), (945, 22492), (1260, 16869), (1890, 11246), (3780, 5623)]