51245220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{65699}}^1$

素因数の和:65724

約数の個数: 48

約数和(自身を含む): 154526400

約数和(自身を除く): 103281180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 65699, 131398, 197097, 262796, 328495, 394194, 656990, 788388, 854087, 985485, 1313980, 1708174, 1970970, 2562261, 3416348, 3941940, 4270435, 5124522, 8540870, 10249044, 12811305, 17081740, 25622610, 51245220]

約数ペア:

[(1, 51245220), (2, 25622610), (3, 17081740), (4, 12811305), (5, 10249044), (6, 8540870), (10, 5124522), (12, 4270435), (13, 3941940), (15, 3416348), (20, 2562261), (26, 1970970), (30, 1708174), (39, 1313980), (52, 985485), (60, 854087), (65, 788388), (78, 656990), (130, 394194), (156, 328495), (195, 262796), (260, 197097), (390, 131398), (780, 65699)]