216578440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{416497}}^1$

素因数の和:416521

約数の個数: 32

約数和(自身を含む): 524787480

約数和(自身を除く): 308209040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 416497, 832994, 1665988, 2082485, 3331976, 4164970, 5414461, 8329940, 10828922, 16659880, 21657844, 27072305, 43315688, 54144610, 108289220, 216578440]

約数ペア:

[(1, 216578440), (2, 108289220), (4, 54144610), (5, 43315688), (8, 27072305), (10, 21657844), (13, 16659880), (20, 10828922), (26, 8329940), (40, 5414461), (52, 4164970), (65, 3331976), (104, 2082485), (130, 1665988), (260, 832994), (520, 416497)]