21489200

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1733}}^1$

素因数の和:1782

約数の個数: 60

約数和(自身を含む): 53323968

約数和(自身を除く): 31834768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 1733, 2480, 3100, 3466, 6200, 6932, 8665, 12400, 13864, 17330, 27728, 34660, 43325, 53723, 69320, 86650, 107446, 138640, 173300, 214892, 268615, 346600, 429784, 537230, 693200, 859568, 1074460, 1343075, 2148920, 2686150, 4297840, 5372300, 10744600, 21489200]

約数ペア:

[(1, 21489200), (2, 10744600), (4, 5372300), (5, 4297840), (8, 2686150), (10, 2148920), (16, 1343075), (20, 1074460), (25, 859568), (31, 693200), (40, 537230), (50, 429784), (62, 346600), (80, 268615), (100, 214892), (124, 173300), (155, 138640), (200, 107446), (248, 86650), (310, 69320), (400, 53723), (496, 43325), (620, 34660), (775, 27728), (1240, 17330), (1550, 13864), (1733, 12400), (2480, 8665), (3100, 6932), (3466, 6200)]