81293580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6361}}^1$

素因数の和:6447

約数の個数: 72

約数和(自身を含む): 250102944

約数和(自身を除く): 168809364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2556, 3195, 4260, 6361, 6390, 12722, 12780, 19083, 25444, 31805, 38166, 57249, 63610, 76332, 95415, 114498, 127220, 190830, 228996, 286245, 381660, 451631, 572490, 903262, 1144980, 1354893, 1806524, 2258155, 2709786, 4064679, 4516310, 5419572, 6774465, 8129358, 9032620, 13548930, 16258716, 20323395, 27097860, 40646790, 81293580]

約数ペア:

[(1, 81293580), (2, 40646790), (3, 27097860), (4, 20323395), (5, 16258716), (6, 13548930), (9, 9032620), (10, 8129358), (12, 6774465), (15, 5419572), (18, 4516310), (20, 4064679), (30, 2709786), (36, 2258155), (45, 1806524), (60, 1354893), (71, 1144980), (90, 903262), (142, 572490), (180, 451631), (213, 381660), (284, 286245), (355, 228996), (426, 190830), (639, 127220), (710, 114498), (852, 95415), (1065, 76332), (1278, 63610), (1420, 57249), (2130, 38166), (2556, 31805), (3195, 25444), (4260, 19083), (6361, 12780), (6390, 12722)]