418642960

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{275423}}^1$

素因数の和:275455

約数の個数: 40

約数和(自身を含む): 1024577280

約数和(自身を除く): 605934320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 275423, 550846, 1101692, 1377115, 2203384, 2754230, 4406768, 5233037, 5508460, 10466074, 11016920, 20932148, 22033840, 26165185, 41864296, 52330370, 83728592, 104660740, 209321480, 418642960]

約数ペア:

[(1, 418642960), (2, 209321480), (4, 104660740), (5, 83728592), (8, 52330370), (10, 41864296), (16, 26165185), (19, 22033840), (20, 20932148), (38, 11016920), (40, 10466074), (76, 5508460), (80, 5233037), (95, 4406768), (152, 2754230), (190, 2203384), (304, 1377115), (380, 1101692), (760, 550846), (1520, 275423)]