21018424

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4751}}^1$

素因数の和:4843

約数の個数: 32

約数和(自身を含む): 45619200

約数和(自身を除く): 24600776

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 158, 316, 553, 632, 1106, 2212, 4424, 4751, 9502, 19004, 33257, 38008, 66514, 133028, 266056, 375329, 750658, 1501316, 2627303, 3002632, 5254606, 10509212, 21018424]

約数ペア:

[(1, 21018424), (2, 10509212), (4, 5254606), (7, 3002632), (8, 2627303), (14, 1501316), (28, 750658), (56, 375329), (79, 266056), (158, 133028), (316, 66514), (553, 38008), (632, 33257), (1106, 19004), (2212, 9502), (4424, 4751)]