20431120

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6229}}^1$

素因数の和:6283

約数の個数: 40

約数和(自身を含む): 48668760

約数和(自身を除く): 28237640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6229, 12458, 24916, 31145, 49832, 62290, 99664, 124580, 249160, 255389, 498320, 510778, 1021556, 1276945, 2043112, 2553890, 4086224, 5107780, 10215560, 20431120]

約数ペア:

[(1, 20431120), (2, 10215560), (4, 5107780), (5, 4086224), (8, 2553890), (10, 2043112), (16, 1276945), (20, 1021556), (40, 510778), (41, 498320), (80, 255389), (82, 249160), (164, 124580), (205, 99664), (328, 62290), (410, 49832), (656, 31145), (820, 24916), (1640, 12458), (3280, 6229)]