219261640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{421657}}^1$

素因数の和:421681

約数の個数: 32

約数和(自身を含む): 531289080

約数和(自身を除く): 312027440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 421657, 843314, 1686628, 2108285, 3373256, 4216570, 5481541, 8433140, 10963082, 16866280, 21926164, 27407705, 43852328, 54815410, 109630820, 219261640]

約数ペア:

[(1, 219261640), (2, 109630820), (4, 54815410), (5, 43852328), (8, 27407705), (10, 21926164), (13, 16866280), (20, 10963082), (26, 8433140), (40, 5481541), (52, 4216570), (65, 3373256), (104, 2108285), (130, 1686628), (260, 843314), (520, 421657)]