19745680

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4657}}^1$

素因数の和:4723

約数の個数: 40

約数和(自身を含む): 46784952

約数和(自身を除く): 27039272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4657, 9314, 18628, 23285, 37256, 46570, 74512, 93140, 186280, 246821, 372560, 493642, 987284, 1234105, 1974568, 2468210, 3949136, 4936420, 9872840, 19745680]

約数ペア:

[(1, 19745680), (2, 9872840), (4, 4936420), (5, 3949136), (8, 2468210), (10, 1974568), (16, 1234105), (20, 987284), (40, 493642), (53, 372560), (80, 246821), (106, 186280), (212, 93140), (265, 74512), (424, 46570), (530, 37256), (848, 23285), (1060, 18628), (2120, 9314), (4240, 4657)]