51478375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:508

約数の個数: 32

約数和(自身を含む): 70237440

約数和(自身を除く): 18759065

約数列:

[1, 5, 13, 25, 65, 79, 125, 325, 395, 401, 1027, 1625, 1975, 2005, 5135, 5213, 9875, 10025, 25675, 26065, 31679, 50125, 128375, 130325, 158395, 411827, 651625, 791975, 2059135, 3959875, 10295675, 51478375]

約数ペア:

[(1, 51478375), (5, 10295675), (13, 3959875), (25, 2059135), (65, 791975), (79, 651625), (125, 411827), (325, 158395), (395, 130325), (401, 128375), (1027, 50125), (1625, 31679), (1975, 26065), (2005, 25675), (5135, 10025), (5213, 9875)]