21103740

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{1861}}^1$

素因数の和:1889

約数の個数: 120

約数和(自身を含む): 75701472

約数和(自身を除く): 54597732

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, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1861, 1890, 2268, 2835, 3722, 3780, 5583, 5670, 7444, 9305, 11166, 11340, 13027, 16749, 18610, 22332, 26054, 27915, 33498, 37220, 39081, 50247, 52108, 55830, 65135, 66996, 78162, 83745, 100494, 111660, 117243, 130270, 150741, 156324, 167490, 195405, 200988, 234486, 251235, 260540, 301482, 334980, 351729, 390810, 468972, 502470, 586215, 602964, 703458, 753705, 781620, 1004940, 1055187, 1172430, 1406916, 1507410, 1758645, 2110374, 2344860, 3014820, 3517290, 4220748, 5275935, 7034580, 10551870, 21103740]

約数ペア:

[(1, 21103740), (2, 10551870), (3, 7034580), (4, 5275935), (5, 4220748), (6, 3517290), (7, 3014820), (9, 2344860), (10, 2110374), (12, 1758645), (14, 1507410), (15, 1406916), (18, 1172430), (20, 1055187), (21, 1004940), (27, 781620), (28, 753705), (30, 703458), (35, 602964), (36, 586215), (42, 502470), (45, 468972), (54, 390810), (60, 351729), (63, 334980), (70, 301482), (81, 260540), (84, 251235), (90, 234486), (105, 200988), (108, 195405), (126, 167490), (135, 156324), (140, 150741), (162, 130270), (180, 117243), (189, 111660), (210, 100494), (252, 83745), (270, 78162), (315, 66996), (324, 65135), (378, 55830), (405, 52108), (420, 50247), (540, 39081), (567, 37220), (630, 33498), (756, 27915), (810, 26054), (945, 22332), (1134, 18610), (1260, 16749), (1620, 13027), (1861, 11340), (1890, 11166), (2268, 9305), (2835, 7444), (3722, 5670), (3780, 5583)]