21411620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 47537280

約数和(自身を除く): 26125660

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 89, 92, 115, 178, 230, 356, 445, 460, 523, 890, 1046, 1780, 2047, 2092, 2615, 4094, 5230, 8188, 10235, 10460, 12029, 20470, 24058, 40940, 46547, 48116, 60145, 93094, 120290, 186188, 232735, 240580, 465470, 930940, 1070581, 2141162, 4282324, 5352905, 10705810, 21411620]

約数ペア:

[(1, 21411620), (2, 10705810), (4, 5352905), (5, 4282324), (10, 2141162), (20, 1070581), (23, 930940), (46, 465470), (89, 240580), (92, 232735), (115, 186188), (178, 120290), (230, 93094), (356, 60145), (445, 48116), (460, 46547), (523, 40940), (890, 24058), (1046, 20470), (1780, 12029), (2047, 10460), (2092, 10235), (2615, 8188), (4094, 5230)]