218698145

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 281318400

約数和(自身を除く): 62620255

約数列:

[1, 5, 23, 73, 109, 115, 239, 365, 545, 1195, 1679, 2507, 5497, 7957, 8395, 12535, 17447, 26051, 27485, 39785, 87235, 130255, 183011, 401281, 599173, 915055, 1901723, 2006405, 2995865, 9508615, 43739629, 218698145]

約数ペア:

[(1, 218698145), (5, 43739629), (23, 9508615), (73, 2995865), (109, 2006405), (115, 1901723), (239, 915055), (365, 599173), (545, 401281), (1195, 183011), (1679, 130255), (2507, 87235), (5497, 39785), (7957, 27485), (8395, 26051), (12535, 17447)]