21897173680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{827}}^1\times {\mathrm{19469}}^1$

素因数の和:20326

約数の個数: 80

約数和(自身を含む): 53973643680

約数和(自身を除く): 32076470000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 827, 1360, 1654, 3308, 4135, 6616, 8270, 13232, 14059, 16540, 19469, 28118, 33080, 38938, 56236, 66160, 70295, 77876, 97345, 112472, 140590, 155752, 194690, 224944, 281180, 311504, 330973, 389380, 562360, 661946, 778760, 1124720, 1323892, 1557520, 1654865, 2647784, 3309730, 5295568, 6619460, 13238920, 16100863, 26477840, 32201726, 64403452, 80504315, 128806904, 161008630, 257613808, 273714671, 322017260, 547429342, 644034520, 1094858684, 1288069040, 1368573355, 2189717368, 2737146710, 4379434736, 5474293420, 10948586840, 21897173680]

約数ペア:

[(1, 21897173680), (2, 10948586840), (4, 5474293420), (5, 4379434736), (8, 2737146710), (10, 2189717368), (16, 1368573355), (17, 1288069040), (20, 1094858684), (34, 644034520), (40, 547429342), (68, 322017260), (80, 273714671), (85, 257613808), (136, 161008630), (170, 128806904), (272, 80504315), (340, 64403452), (680, 32201726), (827, 26477840), (1360, 16100863), (1654, 13238920), (3308, 6619460), (4135, 5295568), (6616, 3309730), (8270, 2647784), (13232, 1654865), (14059, 1557520), (16540, 1323892), (19469, 1124720), (28118, 778760), (33080, 661946), (38938, 562360), (56236, 389380), (66160, 330973), (70295, 311504), (77876, 281180), (97345, 224944), (112472, 194690), (140590, 155752)]