28990520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{283}}^1$

素因数の和:504

約数の個数: 64

約数和(自身を含む): 70852320

約数和(自身を除く): 41861800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 197, 260, 283, 394, 520, 566, 788, 985, 1132, 1415, 1576, 1970, 2264, 2561, 2830, 3679, 3940, 5122, 5660, 7358, 7880, 10244, 11320, 12805, 14716, 18395, 20488, 25610, 29432, 36790, 51220, 55751, 73580, 102440, 111502, 147160, 223004, 278755, 446008, 557510, 724763, 1115020, 1449526, 2230040, 2899052, 3623815, 5798104, 7247630, 14495260, 28990520]

約数ペア:

[(1, 28990520), (2, 14495260), (4, 7247630), (5, 5798104), (8, 3623815), (10, 2899052), (13, 2230040), (20, 1449526), (26, 1115020), (40, 724763), (52, 557510), (65, 446008), (104, 278755), (130, 223004), (197, 147160), (260, 111502), (283, 102440), (394, 73580), (520, 55751), (566, 51220), (788, 36790), (985, 29432), (1132, 25610), (1415, 20488), (1576, 18395), (1970, 14716), (2264, 12805), (2561, 11320), (2830, 10244), (3679, 7880), (3940, 7358), (5122, 5660)]