21192783165

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2389}}^1\times {\mathrm{2857}}^1$

素因数の和:5283

約数の個数: 64

約数和(自身を含む): 39344371200

約数和(自身を除く): 18151588035

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 2389, 2857, 3105, 7167, 8571, 11945, 14285, 21501, 25713, 35835, 42855, 54947, 64503, 65711, 77139, 107505, 128565, 164841, 197133, 274735, 322515, 328555, 385695, 494523, 591399, 824205, 985665, 1483569, 1774197, 2472615, 2956995, 6825373, 7417845, 8870985, 20476119, 34126865, 61428357, 102380595, 156983579, 184285071, 307141785, 470950737, 784917895, 921425355, 1412852211, 2354753685, 4238556633, 7064261055, 21192783165]

約数ペア:

[(1, 21192783165), (3, 7064261055), (5, 4238556633), (9, 2354753685), (15, 1412852211), (23, 921425355), (27, 784917895), (45, 470950737), (69, 307141785), (115, 184285071), (135, 156983579), (207, 102380595), (345, 61428357), (621, 34126865), (1035, 20476119), (2389, 8870985), (2857, 7417845), (3105, 6825373), (7167, 2956995), (8571, 2472615), (11945, 1774197), (14285, 1483569), (21501, 985665), (25713, 824205), (35835, 591399), (42855, 494523), (54947, 385695), (64503, 328555), (65711, 322515), (77139, 274735), (107505, 197133), (128565, 164841)]