217869860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{27031}}^1$

素因数の和:27084

約数の個数: 48

約数和(自身を含む): 508634112

約数和(自身を除く): 290764252

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 27031, 54062, 108124, 135155, 270310, 351403, 540620, 702806, 837961, 1405612, 1675922, 1757015, 3351844, 3514030, 4189805, 7028060, 8379610, 10893493, 16759220, 21786986, 43573972, 54467465, 108934930, 217869860]

約数ペア:

[(1, 217869860), (2, 108934930), (4, 54467465), (5, 43573972), (10, 21786986), (13, 16759220), (20, 10893493), (26, 8379610), (31, 7028060), (52, 4189805), (62, 3514030), (65, 3351844), (124, 1757015), (130, 1675922), (155, 1405612), (260, 837961), (310, 702806), (403, 540620), (620, 351403), (806, 270310), (1612, 135155), (2015, 108124), (4030, 54062), (8060, 27031)]