28405940

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{12569}}^1$

素因数の和:12691

約数の個数: 24

約数和(自身を含む): 60185160

約数和(自身を除く): 31779220

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 12569, 25138, 50276, 62845, 125690, 251380, 1420297, 2840594, 5681188, 7101485, 14202970, 28405940]

約数ペア:

[(1, 28405940), (2, 14202970), (4, 7101485), (5, 5681188), (10, 2840594), (20, 1420297), (113, 251380), (226, 125690), (452, 62845), (565, 50276), (1130, 25138), (2260, 12569)]