18181480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{509}}^1$

素因数の和:586

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 25882520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 470, 509, 760, 893, 940, 1018, 1786, 1880, 2036, 2545, 3572, 4072, 4465, 5090, 7144, 8930, 9671, 10180, 17860, 19342, 20360, 23923, 35720, 38684, 47846, 48355, 77368, 95692, 96710, 119615, 191384, 193420, 239230, 386840, 454537, 478460, 909074, 956920, 1818148, 2272685, 3636296, 4545370, 9090740, 18181480]

約数ペア:

[(1, 18181480), (2, 9090740), (4, 4545370), (5, 3636296), (8, 2272685), (10, 1818148), (19, 956920), (20, 909074), (38, 478460), (40, 454537), (47, 386840), (76, 239230), (94, 193420), (95, 191384), (152, 119615), (188, 96710), (190, 95692), (235, 77368), (376, 48355), (380, 47846), (470, 38684), (509, 35720), (760, 23923), (893, 20360), (940, 19342), (1018, 17860), (1786, 10180), (1880, 9671), (2036, 8930), (2545, 7144), (3572, 5090), (4072, 4465)]