12880120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:496

約数の個数: 64

約数和(自身を含む): 32127840

約数和(自身を除く): 19247720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 401, 440, 584, 730, 802, 803, 1460, 1604, 1606, 2005, 2920, 3208, 3212, 4010, 4015, 4411, 6424, 8020, 8030, 8822, 16040, 16060, 17644, 22055, 29273, 32120, 35288, 44110, 58546, 88220, 117092, 146365, 176440, 234184, 292730, 322003, 585460, 644006, 1170920, 1288012, 1610015, 2576024, 3220030, 6440060, 12880120]

約数ペア:

[(1, 12880120), (2, 6440060), (4, 3220030), (5, 2576024), (8, 1610015), (10, 1288012), (11, 1170920), (20, 644006), (22, 585460), (40, 322003), (44, 292730), (55, 234184), (73, 176440), (88, 146365), (110, 117092), (146, 88220), (220, 58546), (292, 44110), (365, 35288), (401, 32120), (440, 29273), (584, 22055), (730, 17644), (802, 16060), (803, 16040), (1460, 8822), (1604, 8030), (1606, 8020), (2005, 6424), (2920, 4411), (3208, 4015), (3212, 4010)]