21000496988

素因数分解:

$2^2\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1\times {\mathrm{2879}}^1$

素因数の和:3266

約数の個数: 48

約数和(自身を含む): 37716295680

約数和(自身を除く): 16715798692

約数列:

[1, 2, 4, 83, 127, 166, 173, 254, 332, 346, 508, 692, 2879, 5758, 10541, 11516, 14359, 21082, 21971, 28718, 42164, 43942, 57436, 87884, 238957, 365633, 477914, 498067, 731266, 955828, 996134, 1462532, 1823593, 1992268, 3647186, 7294372, 30347539, 41339561, 60695078, 63254509, 82679122, 121390156, 126509018, 165358244, 253018036, 5250124247, 10500248494, 21000496988]

約数ペア:

[(1, 21000496988), (2, 10500248494), (4, 5250124247), (83, 253018036), (127, 165358244), (166, 126509018), (173, 121390156), (254, 82679122), (332, 63254509), (346, 60695078), (508, 41339561), (692, 30347539), (2879, 7294372), (5758, 3647186), (10541, 1992268), (11516, 1823593), (14359, 1462532), (21082, 996134), (21971, 955828), (28718, 731266), (42164, 498067), (43942, 477914), (57436, 365633), (87884, 238957)]