28620225

素因数分解:

$3^2\times 5^2\times {\mathrm{131}}^1\times {\mathrm{971}}^1$

素因数の和:1118

約数の個数: 36

約数和(自身を含む): 51706512

約数和(自身を除く): 23086287

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 131, 225, 393, 655, 971, 1179, 1965, 2913, 3275, 4855, 5895, 8739, 9825, 14565, 24275, 29475, 43695, 72825, 127201, 218475, 381603, 636005, 1144809, 1908015, 3180025, 5724045, 9540075, 28620225]

約数ペア:

[(1, 28620225), (3, 9540075), (5, 5724045), (9, 3180025), (15, 1908015), (25, 1144809), (45, 636005), (75, 381603), (131, 218475), (225, 127201), (393, 72825), (655, 43695), (971, 29475), (1179, 24275), (1965, 14565), (2913, 9825), (3275, 8739), (4855, 5895)]