81569340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{983}}^1$

素因数の和:1459

約数の個数: 72

約数和(自身を含む): 248215968

約数和(自身を除く): 166646628

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 461, 922, 983, 1383, 1844, 1966, 2305, 2766, 2949, 3932, 4149, 4610, 4915, 5532, 5898, 6915, 8298, 8847, 9220, 9830, 11796, 13830, 14745, 16596, 17694, 19660, 20745, 27660, 29490, 35388, 41490, 44235, 58980, 82980, 88470, 176940, 453163, 906326, 1359489, 1812652, 2265815, 2718978, 4078467, 4531630, 5437956, 6797445, 8156934, 9063260, 13594890, 16313868, 20392335, 27189780, 40784670, 81569340]

約数ペア:

[(1, 81569340), (2, 40784670), (3, 27189780), (4, 20392335), (5, 16313868), (6, 13594890), (9, 9063260), (10, 8156934), (12, 6797445), (15, 5437956), (18, 4531630), (20, 4078467), (30, 2718978), (36, 2265815), (45, 1812652), (60, 1359489), (90, 906326), (180, 453163), (461, 176940), (922, 88470), (983, 82980), (1383, 58980), (1844, 44235), (1966, 41490), (2305, 35388), (2766, 29490), (2949, 27660), (3932, 20745), (4149, 19660), (4610, 17694), (4915, 16596), (5532, 14745), (5898, 13830), (6915, 11796), (8298, 9830), (8847, 9220)]