78417940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:305

約数の個数: 96

約数和(自身を含む): 187488000

約数和(自身を除く): 109070060

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 61, 68, 76, 85, 95, 122, 170, 190, 199, 244, 305, 323, 340, 380, 398, 610, 646, 796, 995, 1037, 1159, 1220, 1292, 1615, 1990, 2074, 2318, 3230, 3383, 3781, 3980, 4148, 4636, 5185, 5795, 6460, 6766, 7562, 10370, 11590, 12139, 13532, 15124, 16915, 18905, 19703, 20740, 23180, 24278, 33830, 37810, 39406, 48556, 60695, 64277, 67660, 75620, 78812, 98515, 121390, 128554, 197030, 206363, 230641, 242780, 257108, 321385, 394060, 412726, 461282, 642770, 825452, 922564, 1031815, 1153205, 1285540, 2063630, 2306410, 3920897, 4127260, 4612820, 7841794, 15683588, 19604485, 39208970, 78417940]

約数ペア:

[(1, 78417940), (2, 39208970), (4, 19604485), (5, 15683588), (10, 7841794), (17, 4612820), (19, 4127260), (20, 3920897), (34, 2306410), (38, 2063630), (61, 1285540), (68, 1153205), (76, 1031815), (85, 922564), (95, 825452), (122, 642770), (170, 461282), (190, 412726), (199, 394060), (244, 321385), (305, 257108), (323, 242780), (340, 230641), (380, 206363), (398, 197030), (610, 128554), (646, 121390), (796, 98515), (995, 78812), (1037, 75620), (1159, 67660), (1220, 64277), (1292, 60695), (1615, 48556), (1990, 39406), (2074, 37810), (2318, 33830), (3230, 24278), (3383, 23180), (3781, 20740), (3980, 19703), (4148, 18905), (4636, 16915), (5185, 15124), (5795, 13532), (6460, 12139), (6766, 11590), (7562, 10370)]