21454040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28229}}^1$

素因数の和:28259

約数の個数: 32

約数和(自身を含む): 50814000

約数和(自身を除く): 29359960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28229, 56458, 112916, 141145, 225832, 282290, 536351, 564580, 1072702, 1129160, 2145404, 2681755, 4290808, 5363510, 10727020, 21454040]

約数ペア:

[(1, 21454040), (2, 10727020), (4, 5363510), (5, 4290808), (8, 2681755), (10, 2145404), (19, 1129160), (20, 1072702), (38, 564580), (40, 536351), (76, 282290), (95, 225832), (152, 141145), (190, 112916), (380, 56458), (760, 28229)]