28487915

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 37711872

約数和(自身を除く): 9223957

約数列:

[1, 5, 23, 31, 61, 115, 131, 155, 305, 655, 713, 1403, 1891, 3013, 3565, 4061, 7015, 7991, 9455, 15065, 20305, 39955, 43493, 93403, 183793, 217465, 247721, 467015, 918965, 1238605, 5697583, 28487915]

約数ペア:

[(1, 28487915), (5, 5697583), (23, 1238605), (31, 918965), (61, 467015), (115, 247721), (131, 217465), (155, 183793), (305, 93403), (655, 43493), (713, 39955), (1403, 20305), (1891, 15065), (3013, 9455), (3565, 7991), (4061, 7015)]