21386280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5749}}^1$

素因数の和:5794

約数の個数: 64

約数和(自身を含む): 66240000

約数和(自身を除く): 44853720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5749, 11498, 17247, 22996, 28745, 34494, 45992, 57490, 68988, 86235, 114980, 137976, 172470, 178219, 229960, 344940, 356438, 534657, 689880, 712876, 891095, 1069314, 1425752, 1782190, 2138628, 2673285, 3564380, 4277256, 5346570, 7128760, 10693140, 21386280]

約数ペア:

[(1, 21386280), (2, 10693140), (3, 7128760), (4, 5346570), (5, 4277256), (6, 3564380), (8, 2673285), (10, 2138628), (12, 1782190), (15, 1425752), (20, 1069314), (24, 891095), (30, 712876), (31, 689880), (40, 534657), (60, 356438), (62, 344940), (93, 229960), (120, 178219), (124, 172470), (155, 137976), (186, 114980), (248, 86235), (310, 68988), (372, 57490), (465, 45992), (620, 34494), (744, 28745), (930, 22996), (1240, 17247), (1860, 11498), (3720, 5749)]