21905040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{853}}^1$

素因数の和:976

約数の個数: 80

約数和(自身を含む): 68620608

約数和(自身を除く): 46715568

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 107, 120, 214, 240, 321, 428, 535, 642, 853, 856, 1070, 1284, 1605, 1706, 1712, 2140, 2559, 2568, 3210, 3412, 4265, 4280, 5118, 5136, 6420, 6824, 8530, 8560, 10236, 12795, 12840, 13648, 17060, 20472, 25590, 25680, 34120, 40944, 51180, 68240, 91271, 102360, 182542, 204720, 273813, 365084, 456355, 547626, 730168, 912710, 1095252, 1369065, 1460336, 1825420, 2190504, 2738130, 3650840, 4381008, 5476260, 7301680, 10952520, 21905040]

約数ペア:

[(1, 21905040), (2, 10952520), (3, 7301680), (4, 5476260), (5, 4381008), (6, 3650840), (8, 2738130), (10, 2190504), (12, 1825420), (15, 1460336), (16, 1369065), (20, 1095252), (24, 912710), (30, 730168), (40, 547626), (48, 456355), (60, 365084), (80, 273813), (107, 204720), (120, 182542), (214, 102360), (240, 91271), (321, 68240), (428, 51180), (535, 40944), (642, 34120), (853, 25680), (856, 25590), (1070, 20472), (1284, 17060), (1605, 13648), (1706, 12840), (1712, 12795), (2140, 10236), (2559, 8560), (2568, 8530), (3210, 6824), (3412, 6420), (4265, 5136), (4280, 5118)]