21000273816

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^2\times {\mathrm{331}}^1\times {\mathrm{1931}}^1$

素因数の和:2345

約数の個数: 96

約数和(自身を含む): 54149014080

約数和(自身を除く): 33148740264

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 74, 111, 148, 222, 296, 331, 444, 662, 888, 993, 1324, 1369, 1931, 1986, 2648, 2738, 3862, 3972, 4107, 5476, 5793, 7724, 7944, 8214, 10952, 11586, 12247, 15448, 16428, 23172, 24494, 32856, 36741, 46344, 48988, 71447, 73482, 97976, 142894, 146964, 214341, 285788, 293928, 428682, 453139, 571576, 639161, 857364, 906278, 1278322, 1359417, 1714728, 1812556, 1917483, 2556644, 2643539, 2718834, 3625112, 3834966, 5113288, 5287078, 5437668, 7669932, 7930617, 10574156, 10875336, 15339864, 15861234, 21148312, 23648957, 31722468, 47297914, 63444936, 70946871, 94595828, 141893742, 189191656, 283787484, 567574968, 875011409, 1750022818, 2625034227, 3500045636, 5250068454, 7000091272, 10500136908, 21000273816]

約数ペア:

[(1, 21000273816), (2, 10500136908), (3, 7000091272), (4, 5250068454), (6, 3500045636), (8, 2625034227), (12, 1750022818), (24, 875011409), (37, 567574968), (74, 283787484), (111, 189191656), (148, 141893742), (222, 94595828), (296, 70946871), (331, 63444936), (444, 47297914), (662, 31722468), (888, 23648957), (993, 21148312), (1324, 15861234), (1369, 15339864), (1931, 10875336), (1986, 10574156), (2648, 7930617), (2738, 7669932), (3862, 5437668), (3972, 5287078), (4107, 5113288), (5476, 3834966), (5793, 3625112), (7724, 2718834), (7944, 2643539), (8214, 2556644), (10952, 1917483), (11586, 1812556), (12247, 1714728), (15448, 1359417), (16428, 1278322), (23172, 906278), (24494, 857364), (32856, 639161), (36741, 571576), (46344, 453139), (48988, 428682), (71447, 293928), (73482, 285788), (97976, 214341), (142894, 146964)]