17722940

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 38539200

約数和(自身を除く): 20816260

約数列:

[1, 2, 4, 5, 10, 20, 61, 73, 122, 146, 199, 244, 292, 305, 365, 398, 610, 730, 796, 995, 1220, 1460, 1990, 3980, 4453, 8906, 12139, 14527, 17812, 22265, 24278, 29054, 44530, 48556, 58108, 60695, 72635, 89060, 121390, 145270, 242780, 290540, 886147, 1772294, 3544588, 4430735, 8861470, 17722940]

約数ペア:

[(1, 17722940), (2, 8861470), (4, 4430735), (5, 3544588), (10, 1772294), (20, 886147), (61, 290540), (73, 242780), (122, 145270), (146, 121390), (199, 89060), (244, 72635), (292, 60695), (305, 58108), (365, 48556), (398, 44530), (610, 29054), (730, 24278), (796, 22265), (995, 17812), (1220, 14527), (1460, 12139), (1990, 8906), (3980, 4453)]