2018723875

素因数分解:

$5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{3917}}^1$

素因数の和:3989

約数の個数: 64

約数和(自身を含む): 3129384960

約数和(自身を除く): 1110661085

約数列:

[1, 5, 7, 19, 25, 31, 35, 95, 125, 133, 155, 175, 217, 475, 589, 665, 775, 875, 1085, 2375, 2945, 3325, 3875, 3917, 4123, 5425, 14725, 16625, 19585, 20615, 27125, 27419, 73625, 74423, 97925, 103075, 121427, 137095, 372115, 489625, 515375, 520961, 607135, 685475, 849989, 1860575, 2307113, 2604805, 3035675, 3427375, 4249945, 9302875, 11535565, 13024025, 15178375, 16149791, 21249725, 57677825, 65120125, 80748955, 106248625, 288389125, 403744775, 2018723875]

約数ペア:

[(1, 2018723875), (5, 403744775), (7, 288389125), (19, 106248625), (25, 80748955), (31, 65120125), (35, 57677825), (95, 21249725), (125, 16149791), (133, 15178375), (155, 13024025), (175, 11535565), (217, 9302875), (475, 4249945), (589, 3427375), (665, 3035675), (775, 2604805), (875, 2307113), (1085, 1860575), (2375, 849989), (2945, 685475), (3325, 607135), (3875, 520961), (3917, 515375), (4123, 489625), (5425, 372115), (14725, 137095), (16625, 121427), (19585, 103075), (20615, 97925), (27125, 74423), (27419, 73625)]