20976240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1231}}^1$

素因数の和:1318

約数の個数: 80

約数和(自身を含む): 65995776

約数和(自身を除く): 45019536

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 71, 80, 120, 142, 213, 240, 284, 355, 426, 568, 710, 852, 1065, 1136, 1231, 1420, 1704, 2130, 2462, 2840, 3408, 3693, 4260, 4924, 5680, 6155, 7386, 8520, 9848, 12310, 14772, 17040, 18465, 19696, 24620, 29544, 36930, 49240, 59088, 73860, 87401, 98480, 147720, 174802, 262203, 295440, 349604, 437005, 524406, 699208, 874010, 1048812, 1311015, 1398416, 1748020, 2097624, 2622030, 3496040, 4195248, 5244060, 6992080, 10488120, 20976240]

約数ペア:

[(1, 20976240), (2, 10488120), (3, 6992080), (4, 5244060), (5, 4195248), (6, 3496040), (8, 2622030), (10, 2097624), (12, 1748020), (15, 1398416), (16, 1311015), (20, 1048812), (24, 874010), (30, 699208), (40, 524406), (48, 437005), (60, 349604), (71, 295440), (80, 262203), (120, 174802), (142, 147720), (213, 98480), (240, 87401), (284, 73860), (355, 59088), (426, 49240), (568, 36930), (710, 29544), (852, 24620), (1065, 19696), (1136, 18465), (1231, 17040), (1420, 14772), (1704, 12310), (2130, 9848), (2462, 8520), (2840, 7386), (3408, 6155), (3693, 5680), (4260, 4924)]