81554940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1601}}^1$

素因数の和:1899

約数の個数: 72

約数和(自身を含む): 248412528

約数和(自身を除く): 166857588

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 283, 566, 849, 1132, 1415, 1601, 1698, 2547, 2830, 3202, 3396, 4245, 4803, 5094, 5660, 6404, 8005, 8490, 9606, 10188, 12735, 14409, 16010, 16980, 19212, 24015, 25470, 28818, 32020, 48030, 50940, 57636, 72045, 96060, 144090, 288180, 453083, 906166, 1359249, 1812332, 2265415, 2718498, 4077747, 4530830, 5436996, 6796245, 8155494, 9061660, 13592490, 16310988, 20388735, 27184980, 40777470, 81554940]

約数ペア:

[(1, 81554940), (2, 40777470), (3, 27184980), (4, 20388735), (5, 16310988), (6, 13592490), (9, 9061660), (10, 8155494), (12, 6796245), (15, 5436996), (18, 4530830), (20, 4077747), (30, 2718498), (36, 2265415), (45, 1812332), (60, 1359249), (90, 906166), (180, 453083), (283, 288180), (566, 144090), (849, 96060), (1132, 72045), (1415, 57636), (1601, 50940), (1698, 48030), (2547, 32020), (2830, 28818), (3202, 25470), (3396, 24015), (4245, 19212), (4803, 16980), (5094, 16010), (5660, 14409), (6404, 12735), (8005, 10188), (8490, 9606)]