30781475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 43711488

約数和(自身を除く): 12930013

約数列:

[1, 5, 17, 23, 25, 47, 67, 85, 115, 235, 335, 391, 425, 575, 799, 1081, 1139, 1175, 1541, 1675, 1955, 3149, 3995, 5405, 5695, 7705, 9775, 15745, 18377, 19975, 26197, 27025, 28475, 38525, 53533, 72427, 78725, 91885, 130985, 267665, 362135, 459425, 654925, 1231259, 1338325, 1810675, 6156295, 30781475]

約数ペア:

[(1, 30781475), (5, 6156295), (17, 1810675), (23, 1338325), (25, 1231259), (47, 654925), (67, 459425), (85, 362135), (115, 267665), (235, 130985), (335, 91885), (391, 78725), (425, 72427), (575, 53533), (799, 38525), (1081, 28475), (1139, 27025), (1175, 26197), (1541, 19975), (1675, 18377), (1955, 15745), (3149, 9775), (3995, 7705), (5405, 5695)]