21183040

素因数分解:

$2^6\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1249}}^1$

素因数の和:1319

約数の個数: 56

約数和(自身を含む): 51435000

約数和(自身を除く): 30251960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 160, 212, 265, 320, 424, 530, 848, 1060, 1249, 1696, 2120, 2498, 3392, 4240, 4996, 6245, 8480, 9992, 12490, 16960, 19984, 24980, 39968, 49960, 66197, 79936, 99920, 132394, 199840, 264788, 330985, 399680, 529576, 661970, 1059152, 1323940, 2118304, 2647880, 4236608, 5295760, 10591520, 21183040]

約数ペア:

[(1, 21183040), (2, 10591520), (4, 5295760), (5, 4236608), (8, 2647880), (10, 2118304), (16, 1323940), (20, 1059152), (32, 661970), (40, 529576), (53, 399680), (64, 330985), (80, 264788), (106, 199840), (160, 132394), (212, 99920), (265, 79936), (320, 66197), (424, 49960), (530, 39968), (848, 24980), (1060, 19984), (1249, 16960), (1696, 12490), (2120, 9992), (2498, 8480), (3392, 6245), (4240, 4996)]