405278380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{769}}^1\times {\mathrm{2027}}^1$

素因数の和:2818

約数の個数: 48

約数和(自身を含む): 918197280

約数和(自身を除く): 512918900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 769, 1538, 2027, 3076, 3845, 4054, 7690, 8108, 9997, 10135, 15380, 19994, 20270, 26351, 39988, 40540, 49985, 52702, 99970, 105404, 131755, 199940, 263510, 527020, 1558763, 3117526, 6235052, 7793815, 15587630, 20263919, 31175260, 40527838, 81055676, 101319595, 202639190, 405278380]

約数ペア:

[(1, 405278380), (2, 202639190), (4, 101319595), (5, 81055676), (10, 40527838), (13, 31175260), (20, 20263919), (26, 15587630), (52, 7793815), (65, 6235052), (130, 3117526), (260, 1558763), (769, 527020), (1538, 263510), (2027, 199940), (3076, 131755), (3845, 105404), (4054, 99970), (7690, 52702), (8108, 49985), (9997, 40540), (10135, 39988), (15380, 26351), (19994, 20270)]