16811960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2011}}^1$

素因数の和:2052

約数の個数: 64

約数和(自身を含む): 43459200

約数和(自身を除く): 26647240

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2011, 2090, 4022, 4180, 8044, 8360, 10055, 16088, 20110, 22121, 38209, 40220, 44242, 76418, 80440, 88484, 110605, 152836, 176968, 191045, 221210, 305672, 382090, 420299, 442420, 764180, 840598, 884840, 1528360, 1681196, 2101495, 3362392, 4202990, 8405980, 16811960]

約数ペア:

[(1, 16811960), (2, 8405980), (4, 4202990), (5, 3362392), (8, 2101495), (10, 1681196), (11, 1528360), (19, 884840), (20, 840598), (22, 764180), (38, 442420), (40, 420299), (44, 382090), (55, 305672), (76, 221210), (88, 191045), (95, 176968), (110, 152836), (152, 110605), (190, 88484), (209, 80440), (220, 76418), (380, 44242), (418, 40220), (440, 38209), (760, 22121), (836, 20110), (1045, 16088), (1672, 10055), (2011, 8360), (2090, 8044), (4022, 4180)]