13390820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{269}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 29937600

約数和(自身を除く): 16546780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 269, 380, 524, 538, 655, 1076, 1310, 1345, 2489, 2620, 2690, 4978, 5111, 5380, 9956, 10222, 12445, 20444, 24890, 25555, 35239, 49780, 51110, 70478, 102220, 140956, 176195, 352390, 669541, 704780, 1339082, 2678164, 3347705, 6695410, 13390820]

約数ペア:

[(1, 13390820), (2, 6695410), (4, 3347705), (5, 2678164), (10, 1339082), (19, 704780), (20, 669541), (38, 352390), (76, 176195), (95, 140956), (131, 102220), (190, 70478), (262, 51110), (269, 49780), (380, 35239), (524, 25555), (538, 24890), (655, 20444), (1076, 12445), (1310, 10222), (1345, 9956), (2489, 5380), (2620, 5111), (2690, 4978)]