21236488

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{941}}^1$

素因数の和:998

約数の個数: 64

約数和(自身を含む): 50641920

約数和(自身を除く): 29405432

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 52, 56, 62, 91, 104, 124, 182, 217, 248, 364, 403, 434, 728, 806, 868, 941, 1612, 1736, 1882, 2821, 3224, 3764, 5642, 6587, 7528, 11284, 12233, 13174, 22568, 24466, 26348, 29171, 48932, 52696, 58342, 85631, 97864, 116684, 171262, 204197, 233368, 342524, 379223, 408394, 685048, 758446, 816788, 1516892, 1633576, 2654561, 3033784, 5309122, 10618244, 21236488]

約数ペア:

[(1, 21236488), (2, 10618244), (4, 5309122), (7, 3033784), (8, 2654561), (13, 1633576), (14, 1516892), (26, 816788), (28, 758446), (31, 685048), (52, 408394), (56, 379223), (62, 342524), (91, 233368), (104, 204197), (124, 171262), (182, 116684), (217, 97864), (248, 85631), (364, 58342), (403, 52696), (434, 48932), (728, 29171), (806, 26348), (868, 24466), (941, 22568), (1612, 13174), (1736, 12233), (1882, 11284), (2821, 7528), (3224, 6587), (3764, 5642)]