19654930

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 20158190

約数列:

[1, 2, 5, 10, 19, 31, 38, 47, 62, 71, 94, 95, 142, 155, 190, 235, 310, 355, 470, 589, 710, 893, 1178, 1349, 1457, 1786, 2201, 2698, 2914, 2945, 3337, 4402, 4465, 5890, 6674, 6745, 7285, 8930, 11005, 13490, 14570, 16685, 22010, 27683, 33370, 41819, 55366, 63403, 83638, 103447, 126806, 138415, 206894, 209095, 276830, 317015, 418190, 517235, 634030, 1034470, 1965493, 3930986, 9827465, 19654930]

約数ペア:

[(1, 19654930), (2, 9827465), (5, 3930986), (10, 1965493), (19, 1034470), (31, 634030), (38, 517235), (47, 418190), (62, 317015), (71, 276830), (94, 209095), (95, 206894), (142, 138415), (155, 126806), (190, 103447), (235, 83638), (310, 63403), (355, 55366), (470, 41819), (589, 33370), (710, 27683), (893, 22010), (1178, 16685), (1349, 14570), (1457, 13490), (1786, 11005), (2201, 8930), (2698, 7285), (2914, 6745), (2945, 6674), (3337, 5890), (4402, 4465)]