21508060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1291}}^1$

素因数の和:1331

約数の個数: 72

約数和(自身を含む): 55674864

約数和(自身を除く): 34166804

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1190, 1291, 1666, 2380, 2582, 3332, 4165, 5164, 6455, 8330, 9037, 12910, 16660, 18074, 21947, 25820, 36148, 43894, 45185, 63259, 87788, 90370, 109735, 126518, 153629, 180740, 219470, 253036, 307258, 316295, 438940, 614516, 632590, 768145, 1075403, 1265180, 1536290, 2150806, 3072580, 4301612, 5377015, 10754030, 21508060]

約数ペア:

[(1, 21508060), (2, 10754030), (4, 5377015), (5, 4301612), (7, 3072580), (10, 2150806), (14, 1536290), (17, 1265180), (20, 1075403), (28, 768145), (34, 632590), (35, 614516), (49, 438940), (68, 316295), (70, 307258), (85, 253036), (98, 219470), (119, 180740), (140, 153629), (170, 126518), (196, 109735), (238, 90370), (245, 87788), (340, 63259), (476, 45185), (490, 43894), (595, 36148), (833, 25820), (980, 21947), (1190, 18074), (1291, 16660), (1666, 12910), (2380, 9037), (2582, 8330), (3332, 6455), (4165, 5164)]