21984175948

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1987}}^1\times {\mathrm{2971}}^1$

素因数の和:4995

約数の個数: 72

約数和(自身を含む): 47148521280

約数和(自身を除く): 25164345332

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 532, 931, 1862, 1987, 2971, 3724, 3974, 5942, 7948, 11884, 13909, 20797, 27818, 37753, 41594, 55636, 56449, 75506, 83188, 97363, 112898, 145579, 151012, 194726, 225796, 264271, 291158, 389452, 395143, 528542, 582316, 790286, 1057084, 1580572, 1849897, 2766001, 3699794, 5532002, 5903377, 7399588, 11064004, 11806754, 23613508, 41323639, 82647278, 112164163, 165294556, 224328326, 289265473, 448656652, 578530946, 785149141, 1157061892, 1570298282, 3140596564, 5496043987, 10992087974, 21984175948]

約数ペア:

[(1, 21984175948), (2, 10992087974), (4, 5496043987), (7, 3140596564), (14, 1570298282), (19, 1157061892), (28, 785149141), (38, 578530946), (49, 448656652), (76, 289265473), (98, 224328326), (133, 165294556), (196, 112164163), (266, 82647278), (532, 41323639), (931, 23613508), (1862, 11806754), (1987, 11064004), (2971, 7399588), (3724, 5903377), (3974, 5532002), (5942, 3699794), (7948, 2766001), (11884, 1849897), (13909, 1580572), (20797, 1057084), (27818, 790286), (37753, 582316), (41594, 528542), (55636, 395143), (56449, 389452), (75506, 291158), (83188, 264271), (97363, 225796), (112898, 194726), (145579, 151012)]