6640020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{997}}^1$

素因数の和:1049

約数の個数: 72

約数和(自身を含む): 20706504

約数和(自身を除く): 14066484

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 997, 1110, 1332, 1665, 1994, 2220, 2991, 3330, 3988, 4985, 5982, 6660, 8973, 9970, 11964, 14955, 17946, 19940, 29910, 35892, 36889, 44865, 59820, 73778, 89730, 110667, 147556, 179460, 184445, 221334, 332001, 368890, 442668, 553335, 664002, 737780, 1106670, 1328004, 1660005, 2213340, 3320010, 6640020]

約数ペア:

[(1, 6640020), (2, 3320010), (3, 2213340), (4, 1660005), (5, 1328004), (6, 1106670), (9, 737780), (10, 664002), (12, 553335), (15, 442668), (18, 368890), (20, 332001), (30, 221334), (36, 184445), (37, 179460), (45, 147556), (60, 110667), (74, 89730), (90, 73778), (111, 59820), (148, 44865), (180, 36889), (185, 35892), (222, 29910), (333, 19940), (370, 17946), (444, 14955), (555, 11964), (666, 9970), (740, 8973), (997, 6660), (1110, 5982), (1332, 4985), (1665, 3988), (1994, 3330), (2220, 2991)]