28161775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 40068864

約数和(自身を除く): 11907089

約数列:

[1, 5, 17, 23, 25, 43, 67, 85, 115, 215, 335, 391, 425, 575, 731, 989, 1075, 1139, 1541, 1675, 1955, 2881, 3655, 4945, 5695, 7705, 9775, 14405, 16813, 18275, 24725, 26197, 28475, 38525, 48977, 66263, 72025, 84065, 130985, 244885, 331315, 420325, 654925, 1126471, 1224425, 1656575, 5632355, 28161775]

約数ペア:

[(1, 28161775), (5, 5632355), (17, 1656575), (23, 1224425), (25, 1126471), (43, 654925), (67, 420325), (85, 331315), (115, 244885), (215, 130985), (335, 84065), (391, 72025), (425, 66263), (575, 48977), (731, 38525), (989, 28475), (1075, 26197), (1139, 24725), (1541, 18275), (1675, 16813), (1955, 14405), (2881, 9775), (3655, 7705), (4945, 5695)]