20868888

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 54501120

約数和(自身を除く): 33632232

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 71, 74, 111, 142, 148, 213, 222, 284, 296, 331, 426, 444, 568, 662, 852, 888, 993, 1324, 1704, 1986, 2627, 2648, 3972, 5254, 7881, 7944, 10508, 12247, 15762, 21016, 23501, 24494, 31524, 36741, 47002, 48988, 63048, 70503, 73482, 94004, 97976, 141006, 146964, 188008, 282012, 293928, 564024, 869537, 1739074, 2608611, 3478148, 5217222, 6956296, 10434444, 20868888]

約数ペア:

[(1, 20868888), (2, 10434444), (3, 6956296), (4, 5217222), (6, 3478148), (8, 2608611), (12, 1739074), (24, 869537), (37, 564024), (71, 293928), (74, 282012), (111, 188008), (142, 146964), (148, 141006), (213, 97976), (222, 94004), (284, 73482), (296, 70503), (331, 63048), (426, 48988), (444, 47002), (568, 36741), (662, 31524), (852, 24494), (888, 23501), (993, 21016), (1324, 15762), (1704, 12247), (1986, 10508), (2627, 7944), (2648, 7881), (3972, 5254)]