21978504

素因数分解:

$2^3\times 3^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:315

約数の個数: 96

約数和(自身を含む): 63148800

約数和(自身を除く): 41170296

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 31, 36, 43, 62, 72, 86, 93, 124, 129, 172, 186, 229, 248, 258, 279, 344, 372, 387, 458, 516, 558, 687, 744, 774, 916, 1032, 1116, 1333, 1374, 1548, 1832, 2061, 2232, 2666, 2748, 3096, 3999, 4122, 5332, 5496, 7099, 7998, 8244, 9847, 10664, 11997, 14198, 15996, 16488, 19694, 21297, 23994, 28396, 29541, 31992, 39388, 42594, 47988, 56792, 59082, 63891, 78776, 85188, 88623, 95976, 118164, 127782, 170376, 177246, 236328, 255564, 305257, 354492, 511128, 610514, 708984, 915771, 1221028, 1831542, 2442056, 2747313, 3663084, 5494626, 7326168, 10989252, 21978504]

約数ペア:

[(1, 21978504), (2, 10989252), (3, 7326168), (4, 5494626), (6, 3663084), (8, 2747313), (9, 2442056), (12, 1831542), (18, 1221028), (24, 915771), (31, 708984), (36, 610514), (43, 511128), (62, 354492), (72, 305257), (86, 255564), (93, 236328), (124, 177246), (129, 170376), (172, 127782), (186, 118164), (229, 95976), (248, 88623), (258, 85188), (279, 78776), (344, 63891), (372, 59082), (387, 56792), (458, 47988), (516, 42594), (558, 39388), (687, 31992), (744, 29541), (774, 28396), (916, 23994), (1032, 21297), (1116, 19694), (1333, 16488), (1374, 15996), (1548, 14198), (1832, 11997), (2061, 10664), (2232, 9847), (2666, 8244), (2748, 7998), (3096, 7099), (3999, 5496), (4122, 5332)]