205458320

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{7759}}^1$

素因数の和:8103

約数の個数: 40

約数和(自身を含む): 479195520

約数和(自身を除く): 273737200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 1324, 1655, 2648, 3310, 5296, 6620, 7759, 13240, 15518, 26480, 31036, 38795, 62072, 77590, 124144, 155180, 310360, 620720, 2568229, 5136458, 10272916, 12841145, 20545832, 25682290, 41091664, 51364580, 102729160, 205458320]

約数ペア:

[(1, 205458320), (2, 102729160), (4, 51364580), (5, 41091664), (8, 25682290), (10, 20545832), (16, 12841145), (20, 10272916), (40, 5136458), (80, 2568229), (331, 620720), (662, 310360), (1324, 155180), (1655, 124144), (2648, 77590), (3310, 62072), (5296, 38795), (6620, 31036), (7759, 26480), (13240, 15518)]