81656520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61861}}^1$

素因数の和:61886

約数の個数: 64

約数和(自身を含む): 267243840

約数和(自身を除く): 185587320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 61861, 123722, 185583, 247444, 309305, 371166, 494888, 618610, 680471, 742332, 927915, 1237220, 1360942, 1484664, 1855830, 2041413, 2474440, 2721884, 3402355, 3711660, 4082826, 5443768, 6804710, 7423320, 8165652, 10207065, 13609420, 16331304, 20414130, 27218840, 40828260, 81656520]

約数ペア:

[(1, 81656520), (2, 40828260), (3, 27218840), (4, 20414130), (5, 16331304), (6, 13609420), (8, 10207065), (10, 8165652), (11, 7423320), (12, 6804710), (15, 5443768), (20, 4082826), (22, 3711660), (24, 3402355), (30, 2721884), (33, 2474440), (40, 2041413), (44, 1855830), (55, 1484664), (60, 1360942), (66, 1237220), (88, 927915), (110, 742332), (120, 680471), (132, 618610), (165, 494888), (220, 371166), (264, 309305), (330, 247444), (440, 185583), (660, 123722), (1320, 61861)]