81561960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3191}}^1$

素因数の和:3279

約数の個数: 96

約数和(自身を含む): 268894080

約数和(自身を除く): 187332120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 71, 72, 90, 120, 142, 180, 213, 284, 355, 360, 426, 568, 639, 710, 852, 1065, 1278, 1420, 1704, 2130, 2556, 2840, 3191, 3195, 4260, 5112, 6382, 6390, 8520, 9573, 12764, 12780, 15955, 19146, 25528, 25560, 28719, 31910, 38292, 47865, 57438, 63820, 76584, 95730, 114876, 127640, 143595, 191460, 226561, 229752, 287190, 382920, 453122, 574380, 679683, 906244, 1132805, 1148760, 1359366, 1812488, 2039049, 2265610, 2718732, 3398415, 4078098, 4531220, 5437464, 6796830, 8156196, 9062440, 10195245, 13593660, 16312392, 20390490, 27187320, 40780980, 81561960]

約数ペア:

[(1, 81561960), (2, 40780980), (3, 27187320), (4, 20390490), (5, 16312392), (6, 13593660), (8, 10195245), (9, 9062440), (10, 8156196), (12, 6796830), (15, 5437464), (18, 4531220), (20, 4078098), (24, 3398415), (30, 2718732), (36, 2265610), (40, 2039049), (45, 1812488), (60, 1359366), (71, 1148760), (72, 1132805), (90, 906244), (120, 679683), (142, 574380), (180, 453122), (213, 382920), (284, 287190), (355, 229752), (360, 226561), (426, 191460), (568, 143595), (639, 127640), (710, 114876), (852, 95730), (1065, 76584), (1278, 63820), (1420, 57438), (1704, 47865), (2130, 38292), (2556, 31910), (2840, 28719), (3191, 25560), (3195, 25528), (4260, 19146), (5112, 15955), (6382, 12780), (6390, 12764), (8520, 9573)]