28740455

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 38890368

約数和(自身を除く): 10149913

約数列:

[1, 5, 17, 23, 61, 85, 115, 241, 305, 391, 1037, 1205, 1403, 1955, 4097, 5185, 5543, 7015, 14701, 20485, 23851, 27715, 73505, 94231, 119255, 249917, 338123, 471155, 1249585, 1690615, 5748091, 28740455]

約数ペア:

[(1, 28740455), (5, 5748091), (17, 1690615), (23, 1249585), (61, 471155), (85, 338123), (115, 249917), (241, 119255), (305, 94231), (391, 73505), (1037, 27715), (1205, 23851), (1403, 20485), (1955, 14701), (4097, 7015), (5185, 5543)]