20286860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 47860848

約数和(自身を除く): 27573988

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 83, 101, 110, 121, 166, 202, 220, 242, 332, 404, 415, 484, 505, 605, 830, 913, 1010, 1111, 1210, 1660, 1826, 2020, 2222, 2420, 3652, 4444, 4565, 5555, 8383, 9130, 10043, 11110, 12221, 16766, 18260, 20086, 22220, 24442, 33532, 40172, 41915, 48884, 50215, 61105, 83830, 92213, 100430, 122210, 167660, 184426, 200860, 244420, 368852, 461065, 922130, 1014343, 1844260, 2028686, 4057372, 5071715, 10143430, 20286860]

約数ペア:

[(1, 20286860), (2, 10143430), (4, 5071715), (5, 4057372), (10, 2028686), (11, 1844260), (20, 1014343), (22, 922130), (44, 461065), (55, 368852), (83, 244420), (101, 200860), (110, 184426), (121, 167660), (166, 122210), (202, 100430), (220, 92213), (242, 83830), (332, 61105), (404, 50215), (415, 48884), (484, 41915), (505, 40172), (605, 33532), (830, 24442), (913, 22220), (1010, 20086), (1111, 18260), (1210, 16766), (1660, 12221), (1826, 11110), (2020, 10043), (2222, 9130), (2420, 8383), (3652, 5555), (4444, 4565)]