998425870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{404221}}^1$

素因数の和:404260

約数の個数: 32

約数和(自身を含む): 2037278880

約数和(自身を除く): 1038853010

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 404221, 808442, 2021105, 4042210, 5254873, 7680199, 10509746, 15360398, 26274365, 38400995, 52548730, 76801990, 99842587, 199685174, 499212935, 998425870]

約数ペア:

[(1, 998425870), (2, 499212935), (5, 199685174), (10, 99842587), (13, 76801990), (19, 52548730), (26, 38400995), (38, 26274365), (65, 15360398), (95, 10509746), (130, 7680199), (190, 5254873), (247, 4042210), (494, 2021105), (1235, 808442), (2470, 404221)]