28259790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72461}}^1$

素因数の和:72484

約数の個数: 32

約数和(自身を含む): 73041696

約数和(自身を除く): 44781906

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 72461, 144922, 217383, 362305, 434766, 724610, 941993, 1086915, 1883986, 2173830, 2825979, 4709965, 5651958, 9419930, 14129895, 28259790]

約数ペア:

[(1, 28259790), (2, 14129895), (3, 9419930), (5, 5651958), (6, 4709965), (10, 2825979), (13, 2173830), (15, 1883986), (26, 1086915), (30, 941993), (39, 724610), (65, 434766), (78, 362305), (130, 217383), (195, 144922), (390, 72461)]