18704240

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:210

約数の個数: 80

約数和(自身を含む): 45800640

約数和(自身を除く): 27096400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 71, 74, 80, 89, 142, 148, 178, 185, 284, 296, 355, 356, 370, 445, 568, 592, 710, 712, 740, 890, 1136, 1420, 1424, 1480, 1780, 2627, 2840, 2960, 3293, 3560, 5254, 5680, 6319, 6586, 7120, 10508, 12638, 13135, 13172, 16465, 21016, 25276, 26270, 26344, 31595, 32930, 42032, 50552, 52540, 52688, 63190, 65860, 101104, 105080, 126380, 131720, 210160, 233803, 252760, 263440, 467606, 505520, 935212, 1169015, 1870424, 2338030, 3740848, 4676060, 9352120, 18704240]

約数ペア:

[(1, 18704240), (2, 9352120), (4, 4676060), (5, 3740848), (8, 2338030), (10, 1870424), (16, 1169015), (20, 935212), (37, 505520), (40, 467606), (71, 263440), (74, 252760), (80, 233803), (89, 210160), (142, 131720), (148, 126380), (178, 105080), (185, 101104), (284, 65860), (296, 63190), (355, 52688), (356, 52540), (370, 50552), (445, 42032), (568, 32930), (592, 31595), (710, 26344), (712, 26270), (740, 25276), (890, 21016), (1136, 16465), (1420, 13172), (1424, 13135), (1480, 12638), (1780, 10508), (2627, 7120), (2840, 6586), (2960, 6319), (3293, 5680), (3560, 5254)]