20474960

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{439}}^1$

素因数の和:516

約数の個数: 80

約数和(自身を含む): 53032320

約数和(自身を除く): 32557360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 53, 55, 80, 88, 106, 110, 176, 212, 220, 265, 424, 439, 440, 530, 583, 848, 878, 880, 1060, 1166, 1756, 2120, 2195, 2332, 2915, 3512, 4240, 4390, 4664, 4829, 5830, 7024, 8780, 9328, 9658, 11660, 17560, 19316, 23267, 23320, 24145, 35120, 38632, 46534, 46640, 48290, 77264, 93068, 96580, 116335, 186136, 193160, 232670, 255937, 372272, 386320, 465340, 511874, 930680, 1023748, 1279685, 1861360, 2047496, 2559370, 4094992, 5118740, 10237480, 20474960]

約数ペア:

[(1, 20474960), (2, 10237480), (4, 5118740), (5, 4094992), (8, 2559370), (10, 2047496), (11, 1861360), (16, 1279685), (20, 1023748), (22, 930680), (40, 511874), (44, 465340), (53, 386320), (55, 372272), (80, 255937), (88, 232670), (106, 193160), (110, 186136), (176, 116335), (212, 96580), (220, 93068), (265, 77264), (424, 48290), (439, 46640), (440, 46534), (530, 38632), (583, 35120), (848, 24145), (878, 23320), (880, 23267), (1060, 19316), (1166, 17560), (1756, 11660), (2120, 9658), (2195, 9328), (2332, 8780), (2915, 7024), (3512, 5830), (4240, 4829), (4390, 4664)]