221706520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{991}}^1$

素因数の和:1073

約数の個数: 128

約数和(自身を含む): 617103360

約数和(自身を除く): 395396840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 47, 56, 68, 70, 85, 94, 119, 136, 140, 170, 188, 235, 238, 280, 329, 340, 376, 470, 476, 595, 658, 680, 799, 940, 952, 991, 1190, 1316, 1598, 1645, 1880, 1982, 2380, 2632, 3196, 3290, 3964, 3995, 4760, 4955, 5593, 6392, 6580, 6937, 7928, 7990, 9910, 11186, 13160, 13874, 15980, 16847, 19820, 22372, 27748, 27965, 31960, 33694, 34685, 39640, 44744, 46577, 55496, 55930, 67388, 69370, 84235, 93154, 111860, 117929, 134776, 138740, 168470, 186308, 223720, 232885, 235858, 277480, 326039, 336940, 372616, 465770, 471716, 589645, 652078, 673880, 791809, 931540, 943432, 1179290, 1304156, 1583618, 1630195, 1863080, 2358580, 2608312, 3167236, 3260390, 3959045, 4717160, 5542663, 6334472, 6520780, 7918090, 11085326, 13041560, 15836180, 22170652, 27713315, 31672360, 44341304, 55426630, 110853260, 221706520]

約数ペア:

[(1, 221706520), (2, 110853260), (4, 55426630), (5, 44341304), (7, 31672360), (8, 27713315), (10, 22170652), (14, 15836180), (17, 13041560), (20, 11085326), (28, 7918090), (34, 6520780), (35, 6334472), (40, 5542663), (47, 4717160), (56, 3959045), (68, 3260390), (70, 3167236), (85, 2608312), (94, 2358580), (119, 1863080), (136, 1630195), (140, 1583618), (170, 1304156), (188, 1179290), (235, 943432), (238, 931540), (280, 791809), (329, 673880), (340, 652078), (376, 589645), (470, 471716), (476, 465770), (595, 372616), (658, 336940), (680, 326039), (799, 277480), (940, 235858), (952, 232885), (991, 223720), (1190, 186308), (1316, 168470), (1598, 138740), (1645, 134776), (1880, 117929), (1982, 111860), (2380, 93154), (2632, 84235), (3196, 69370), (3290, 67388), (3964, 55930), (3995, 55496), (4760, 46577), (4955, 44744), (5593, 39640), (6392, 34685), (6580, 33694), (6937, 31960), (7928, 27965), (7990, 27748), (9910, 22372), (11186, 19820), (13160, 16847), (13874, 15980)]