51351950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{397}}^1$

素因数の和:621

約数の個数: 48

約数和(自身を含む): 103639200

約数和(自身を除く): 52287250

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 199, 325, 397, 398, 650, 794, 995, 1985, 1990, 2587, 3970, 4975, 5161, 5174, 9925, 9950, 10322, 12935, 19850, 25805, 25870, 51610, 64675, 79003, 129025, 129350, 158006, 258050, 395015, 790030, 1027039, 1975075, 2054078, 3950150, 5135195, 10270390, 25675975, 51351950]

約数ペア:

[(1, 51351950), (2, 25675975), (5, 10270390), (10, 5135195), (13, 3950150), (25, 2054078), (26, 1975075), (50, 1027039), (65, 790030), (130, 395015), (199, 258050), (325, 158006), (397, 129350), (398, 129025), (650, 79003), (794, 64675), (995, 51610), (1985, 25870), (1990, 25805), (2587, 19850), (3970, 12935), (4975, 10322), (5161, 9950), (5174, 9925)]