18720870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{373}}^1$

素因数の和:629

約数の個数: 64

約数和(自身を含む): 51701760

約数和(自身を除く): 32980890

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 239, 373, 478, 717, 746, 1119, 1195, 1434, 1673, 1865, 2238, 2390, 2611, 3346, 3585, 3730, 5019, 5222, 5595, 7170, 7833, 8365, 10038, 11190, 13055, 15666, 16730, 25095, 26110, 39165, 50190, 78330, 89147, 178294, 267441, 445735, 534882, 624029, 891470, 1248058, 1337205, 1872087, 2674410, 3120145, 3744174, 6240290, 9360435, 18720870]

約数ペア:

[(1, 18720870), (2, 9360435), (3, 6240290), (5, 3744174), (6, 3120145), (7, 2674410), (10, 1872087), (14, 1337205), (15, 1248058), (21, 891470), (30, 624029), (35, 534882), (42, 445735), (70, 267441), (105, 178294), (210, 89147), (239, 78330), (373, 50190), (478, 39165), (717, 26110), (746, 25095), (1119, 16730), (1195, 15666), (1434, 13055), (1673, 11190), (1865, 10038), (2238, 8365), (2390, 7833), (2611, 7170), (3346, 5595), (3585, 5222), (3730, 5019)]