991499880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{797}}^1\times {\mathrm{1481}}^1$

素因数の和:2299

約数の個数: 128

約数和(自身を含む): 3405991680

約数和(自身を除く): 2414491800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 797, 840, 1481, 1594, 2391, 2962, 3188, 3985, 4443, 4782, 5579, 5924, 6376, 7405, 7970, 8886, 9564, 10367, 11158, 11848, 11955, 14810, 15940, 16737, 17772, 19128, 20734, 22215, 22316, 23910, 27895, 29620, 31101, 31880, 33474, 35544, 41468, 44430, 44632, 47820, 51835, 55790, 59240, 62202, 66948, 82936, 83685, 88860, 95640, 103670, 111580, 124404, 133896, 155505, 167370, 177720, 207340, 223160, 248808, 311010, 334740, 414680, 622020, 669480, 1180357, 1244040, 2360714, 3541071, 4721428, 5901785, 7082142, 8262499, 9442856, 11803570, 14164284, 16524998, 17705355, 23607140, 24787497, 28328568, 33049996, 35410710, 41312495, 47214280, 49574994, 66099992, 70821420, 82624990, 99149988, 123937485, 141642840, 165249980, 198299976, 247874970, 330499960, 495749940, 991499880]

約数ペア:

[(1, 991499880), (2, 495749940), (3, 330499960), (4, 247874970), (5, 198299976), (6, 165249980), (7, 141642840), (8, 123937485), (10, 99149988), (12, 82624990), (14, 70821420), (15, 66099992), (20, 49574994), (21, 47214280), (24, 41312495), (28, 35410710), (30, 33049996), (35, 28328568), (40, 24787497), (42, 23607140), (56, 17705355), (60, 16524998), (70, 14164284), (84, 11803570), (105, 9442856), (120, 8262499), (140, 7082142), (168, 5901785), (210, 4721428), (280, 3541071), (420, 2360714), (797, 1244040), (840, 1180357), (1481, 669480), (1594, 622020), (2391, 414680), (2962, 334740), (3188, 311010), (3985, 248808), (4443, 223160), (4782, 207340), (5579, 177720), (5924, 167370), (6376, 155505), (7405, 133896), (7970, 124404), (8886, 111580), (9564, 103670), (10367, 95640), (11158, 88860), (11848, 83685), (11955, 82936), (14810, 66948), (15940, 62202), (16737, 59240), (17772, 55790), (19128, 51835), (20734, 47820), (22215, 44632), (22316, 44430), (23910, 41468), (27895, 35544), (29620, 33474), (31101, 31880)]