19785780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:446

約数の個数: 144

約数和(自身を含む): 70447104

約数和(自身を除く): 50661324

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 41, 42, 45, 60, 63, 70, 82, 84, 90, 105, 123, 126, 140, 164, 180, 205, 210, 246, 252, 287, 315, 369, 383, 410, 420, 492, 574, 615, 630, 738, 766, 820, 861, 1148, 1149, 1230, 1260, 1435, 1476, 1532, 1722, 1845, 1915, 2298, 2460, 2583, 2681, 2870, 3444, 3447, 3690, 3830, 4305, 4596, 5166, 5362, 5740, 5745, 6894, 7380, 7660, 8043, 8610, 10332, 10724, 11490, 12915, 13405, 13788, 15703, 16086, 17220, 17235, 22980, 24129, 25830, 26810, 31406, 32172, 34470, 40215, 47109, 48258, 51660, 53620, 62812, 68940, 78515, 80430, 94218, 96516, 109921, 120645, 141327, 157030, 160860, 188436, 219842, 235545, 241290, 282654, 314060, 329763, 439684, 471090, 482580, 549605, 565308, 659526, 706635, 942180, 989289, 1099210, 1319052, 1413270, 1648815, 1978578, 2198420, 2826540, 3297630, 3957156, 4946445, 6595260, 9892890, 19785780]

約数ペア:

[(1, 19785780), (2, 9892890), (3, 6595260), (4, 4946445), (5, 3957156), (6, 3297630), (7, 2826540), (9, 2198420), (10, 1978578), (12, 1648815), (14, 1413270), (15, 1319052), (18, 1099210), (20, 989289), (21, 942180), (28, 706635), (30, 659526), (35, 565308), (36, 549605), (41, 482580), (42, 471090), (45, 439684), (60, 329763), (63, 314060), (70, 282654), (82, 241290), (84, 235545), (90, 219842), (105, 188436), (123, 160860), (126, 157030), (140, 141327), (164, 120645), (180, 109921), (205, 96516), (210, 94218), (246, 80430), (252, 78515), (287, 68940), (315, 62812), (369, 53620), (383, 51660), (410, 48258), (420, 47109), (492, 40215), (574, 34470), (615, 32172), (630, 31406), (738, 26810), (766, 25830), (820, 24129), (861, 22980), (1148, 17235), (1149, 17220), (1230, 16086), (1260, 15703), (1435, 13788), (1476, 13405), (1532, 12915), (1722, 11490), (1845, 10724), (1915, 10332), (2298, 8610), (2460, 8043), (2583, 7660), (2681, 7380), (2870, 6894), (3444, 5745), (3447, 5740), (3690, 5362), (3830, 5166), (4305, 4596)]