18680451975

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{56983}}^1$

素因数の和:57077

約数の個数: 72

約数和(自身を含む): 35273551872

約数和(自身を除く): 16593099897

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 47, 75, 93, 141, 155, 225, 235, 279, 423, 465, 705, 775, 1175, 1395, 1457, 2115, 2325, 3525, 4371, 6975, 7285, 10575, 13113, 21855, 36425, 56983, 65565, 109275, 170949, 284915, 327825, 512847, 854745, 1424575, 1766473, 2564235, 2678201, 4273725, 5299419, 8034603, 8832365, 12821175, 13391005, 15898257, 24103809, 26497095, 40173015, 44161825, 66955025, 79491285, 83024231, 120519045, 132485475, 200865075, 249072693, 397456425, 415121155, 602595225, 747218079, 1245363465, 2075605775, 3736090395, 6226817325, 18680451975]

約数ペア:

[(1, 18680451975), (3, 6226817325), (5, 3736090395), (9, 2075605775), (15, 1245363465), (25, 747218079), (31, 602595225), (45, 415121155), (47, 397456425), (75, 249072693), (93, 200865075), (141, 132485475), (155, 120519045), (225, 83024231), (235, 79491285), (279, 66955025), (423, 44161825), (465, 40173015), (705, 26497095), (775, 24103809), (1175, 15898257), (1395, 13391005), (1457, 12821175), (2115, 8832365), (2325, 8034603), (3525, 5299419), (4371, 4273725), (6975, 2678201), (7285, 2564235), (10575, 1766473), (13113, 1424575), (21855, 854745), (36425, 512847), (56983, 327825), (65565, 284915), (109275, 170949)]