28238275

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 13946525

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 221, 247, 269, 323, 325, 425, 475, 1105, 1235, 1345, 1615, 3497, 4199, 4573, 5111, 5525, 6175, 6725, 8075, 17485, 20995, 22865, 25555, 59449, 66443, 86887, 87425, 104975, 114325, 127775, 297245, 332215, 434435, 1129531, 1486225, 1661075, 2172175, 5647655, 28238275]

約数ペア:

[(1, 28238275), (5, 5647655), (13, 2172175), (17, 1661075), (19, 1486225), (25, 1129531), (65, 434435), (85, 332215), (95, 297245), (221, 127775), (247, 114325), (269, 104975), (323, 87425), (325, 86887), (425, 66443), (475, 59449), (1105, 25555), (1235, 22865), (1345, 20995), (1615, 17485), (3497, 8075), (4199, 6725), (4573, 6175), (5111, 5525)]