398058440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{765497}}^1$

素因数の和:765521

約数の個数: 32

約数和(自身を含む): 964527480

約数和(自身を除く): 566469040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 765497, 1530994, 3061988, 3827485, 6123976, 7654970, 9951461, 15309940, 19902922, 30619880, 39805844, 49757305, 79611688, 99514610, 199029220, 398058440]

約数ペア:

[(1, 398058440), (2, 199029220), (4, 99514610), (5, 79611688), (8, 49757305), (10, 39805844), (13, 30619880), (20, 19902922), (26, 15309940), (40, 9951461), (52, 7654970), (65, 6123976), (104, 3827485), (130, 3061988), (260, 1530994), (520, 765497)]