28209220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108497}}^1$

素因数の和:108519

約数の個数: 24

約数和(自身を含む): 63796824

約数和(自身を除く): 35587604

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108497, 216994, 433988, 542485, 1084970, 1410461, 2169940, 2820922, 5641844, 7052305, 14104610, 28209220]

約数ペア:

[(1, 28209220), (2, 14104610), (4, 7052305), (5, 5641844), (10, 2820922), (13, 2169940), (20, 1410461), (26, 1084970), (52, 542485), (65, 433988), (130, 216994), (260, 108497)]