261567280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5849}}^1$

素因数の和:5918

約数の個数: 80

約数和(自身を含む): 670269600

約数和(自身を除く): 408702320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 1040, 1118, 1720, 2236, 2795, 3440, 4472, 5590, 5849, 8944, 11180, 11698, 22360, 23396, 29245, 44720, 46792, 58490, 76037, 93584, 116980, 152074, 233960, 251507, 304148, 380185, 467920, 503014, 608296, 760370, 1006028, 1216592, 1257535, 1520740, 2012056, 2515070, 3041480, 3269591, 4024112, 5030140, 6082960, 6539182, 10060280, 13078364, 16347955, 20120560, 26156728, 32695910, 52313456, 65391820, 130783640, 261567280]

約数ペア:

[(1, 261567280), (2, 130783640), (4, 65391820), (5, 52313456), (8, 32695910), (10, 26156728), (13, 20120560), (16, 16347955), (20, 13078364), (26, 10060280), (40, 6539182), (43, 6082960), (52, 5030140), (65, 4024112), (80, 3269591), (86, 3041480), (104, 2515070), (130, 2012056), (172, 1520740), (208, 1257535), (215, 1216592), (260, 1006028), (344, 760370), (430, 608296), (520, 503014), (559, 467920), (688, 380185), (860, 304148), (1040, 251507), (1118, 233960), (1720, 152074), (2236, 116980), (2795, 93584), (3440, 76037), (4472, 58490), (5590, 46792), (5849, 44720), (8944, 29245), (11180, 23396), (11698, 22360)]