28890820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:293

約数の個数: 96

約数和(自身を含む): 74995200

約数和(自身を除く): 46104380

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 61, 68, 70, 85, 119, 122, 140, 170, 199, 238, 244, 305, 340, 398, 427, 476, 595, 610, 796, 854, 995, 1037, 1190, 1220, 1393, 1708, 1990, 2074, 2135, 2380, 2786, 3383, 3980, 4148, 4270, 5185, 5572, 6766, 6965, 7259, 8540, 10370, 12139, 13532, 13930, 14518, 16915, 20740, 23681, 24278, 27860, 29036, 33830, 36295, 47362, 48556, 60695, 67660, 72590, 84973, 94724, 118405, 121390, 145180, 169946, 206363, 236810, 242780, 339892, 412726, 424865, 473620, 825452, 849730, 1031815, 1444541, 1699460, 2063630, 2889082, 4127260, 5778164, 7222705, 14445410, 28890820]

約数ペア:

[(1, 28890820), (2, 14445410), (4, 7222705), (5, 5778164), (7, 4127260), (10, 2889082), (14, 2063630), (17, 1699460), (20, 1444541), (28, 1031815), (34, 849730), (35, 825452), (61, 473620), (68, 424865), (70, 412726), (85, 339892), (119, 242780), (122, 236810), (140, 206363), (170, 169946), (199, 145180), (238, 121390), (244, 118405), (305, 94724), (340, 84973), (398, 72590), (427, 67660), (476, 60695), (595, 48556), (610, 47362), (796, 36295), (854, 33830), (995, 29036), (1037, 27860), (1190, 24278), (1220, 23681), (1393, 20740), (1708, 16915), (1990, 14518), (2074, 13930), (2135, 13532), (2380, 12139), (2786, 10370), (3383, 8540), (3980, 7259), (4148, 6965), (4270, 6766), (5185, 5572)]