12701780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1033

約数の個数: 72

約数和(自身を含む): 33448968

約数和(自身を除く): 20747188

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 997, 1274, 1820, 1994, 2548, 3185, 3988, 4985, 6370, 6979, 9970, 12740, 12961, 13958, 19940, 25922, 27916, 34895, 48853, 51844, 64805, 69790, 90727, 97706, 129610, 139580, 181454, 195412, 244265, 259220, 362908, 453635, 488530, 635089, 907270, 977060, 1270178, 1814540, 2540356, 3175445, 6350890, 12701780]

約数ペア:

[(1, 12701780), (2, 6350890), (4, 3175445), (5, 2540356), (7, 1814540), (10, 1270178), (13, 977060), (14, 907270), (20, 635089), (26, 488530), (28, 453635), (35, 362908), (49, 259220), (52, 244265), (65, 195412), (70, 181454), (91, 139580), (98, 129610), (130, 97706), (140, 90727), (182, 69790), (196, 64805), (245, 51844), (260, 48853), (364, 34895), (455, 27916), (490, 25922), (637, 19940), (910, 13958), (980, 12961), (997, 12740), (1274, 9970), (1820, 6979), (1994, 6370), (2548, 4985), (3185, 3988)]