21113680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1019}}^1$

素因数の和:1076

約数の個数: 80

約数和(自身を含む): 57674880

約数和(自身を除く): 36561200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 296, 370, 518, 560, 592, 740, 1019, 1036, 1295, 1480, 2038, 2072, 2590, 2960, 4076, 4144, 5095, 5180, 7133, 8152, 10190, 10360, 14266, 16304, 20380, 20720, 28532, 35665, 37703, 40760, 57064, 71330, 75406, 81520, 114128, 142660, 150812, 188515, 263921, 285320, 301624, 377030, 527842, 570640, 603248, 754060, 1055684, 1319605, 1508120, 2111368, 2639210, 3016240, 4222736, 5278420, 10556840, 21113680]

約数ペア:

[(1, 21113680), (2, 10556840), (4, 5278420), (5, 4222736), (7, 3016240), (8, 2639210), (10, 2111368), (14, 1508120), (16, 1319605), (20, 1055684), (28, 754060), (35, 603248), (37, 570640), (40, 527842), (56, 377030), (70, 301624), (74, 285320), (80, 263921), (112, 188515), (140, 150812), (148, 142660), (185, 114128), (259, 81520), (280, 75406), (296, 71330), (370, 57064), (518, 40760), (560, 37703), (592, 35665), (740, 28532), (1019, 20720), (1036, 20380), (1295, 16304), (1480, 14266), (2038, 10360), (2072, 10190), (2590, 8152), (2960, 7133), (4076, 5180), (4144, 5095)]