7278440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13997}}^1$

素因数の和:14021

約数の個数: 32

約数和(自身を含む): 17637480

約数和(自身を除く): 10359040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 13997, 27994, 55988, 69985, 111976, 139970, 181961, 279940, 363922, 559880, 727844, 909805, 1455688, 1819610, 3639220, 7278440]

約数ペア:

[(1, 7278440), (2, 3639220), (4, 1819610), (5, 1455688), (8, 909805), (10, 727844), (13, 559880), (20, 363922), (26, 279940), (40, 181961), (52, 139970), (65, 111976), (104, 69985), (130, 55988), (260, 27994), (520, 13997)]