19867780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24229}}^1$

素因数の和:24279

約数の個数: 24

約数和(自身を含む): 42741720

約数和(自身を除く): 22873940

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 24229, 48458, 96916, 121145, 242290, 484580, 993389, 1986778, 3973556, 4966945, 9933890, 19867780]

約数ペア:

[(1, 19867780), (2, 9933890), (4, 4966945), (5, 3973556), (10, 1986778), (20, 993389), (41, 484580), (82, 242290), (164, 121145), (205, 96916), (410, 48458), (820, 24229)]