39940020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2054

約数の個数: 96

約数和(自身を含む): 127680000

約数和(自身を除く): 87739980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 37, 45, 54, 60, 74, 90, 108, 111, 135, 148, 180, 185, 222, 270, 333, 370, 444, 540, 555, 666, 740, 999, 1110, 1332, 1665, 1998, 1999, 2220, 3330, 3996, 3998, 4995, 5997, 6660, 7996, 9990, 9995, 11994, 17991, 19980, 19990, 23988, 29985, 35982, 39980, 53973, 59970, 71964, 73963, 89955, 107946, 119940, 147926, 179910, 215892, 221889, 269865, 295852, 359820, 369815, 443778, 539730, 665667, 739630, 887556, 1079460, 1109445, 1331334, 1479260, 1997001, 2218890, 2662668, 3328335, 3994002, 4437780, 6656670, 7988004, 9985005, 13313340, 19970010, 39940020]

約数ペア:

[(1, 39940020), (2, 19970010), (3, 13313340), (4, 9985005), (5, 7988004), (6, 6656670), (9, 4437780), (10, 3994002), (12, 3328335), (15, 2662668), (18, 2218890), (20, 1997001), (27, 1479260), (30, 1331334), (36, 1109445), (37, 1079460), (45, 887556), (54, 739630), (60, 665667), (74, 539730), (90, 443778), (108, 369815), (111, 359820), (135, 295852), (148, 269865), (180, 221889), (185, 215892), (222, 179910), (270, 147926), (333, 119940), (370, 107946), (444, 89955), (540, 73963), (555, 71964), (666, 59970), (740, 53973), (999, 39980), (1110, 35982), (1332, 29985), (1665, 23988), (1998, 19990), (1999, 19980), (2220, 17991), (3330, 11994), (3996, 9995), (3998, 9990), (4995, 7996), (5997, 6660)]