21197200318

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{821}}^1\times {\mathrm{3347}}^1$

素因数の和:4225

約数の個数: 64

約数和(自身を含む): 39629606400

約数和(自身を除く): 18432406082

約数列:

[1, 2, 7, 14, 19, 29, 38, 58, 133, 203, 266, 406, 551, 821, 1102, 1642, 3347, 3857, 5747, 6694, 7714, 11494, 15599, 23429, 23809, 31198, 46858, 47618, 63593, 97063, 109193, 127186, 166663, 194126, 218386, 333326, 445151, 452371, 679441, 890302, 904742, 1358882, 1844197, 2747887, 3166597, 3688394, 5495774, 6333194, 12909379, 19235209, 25818758, 38470418, 52209853, 79688723, 104419706, 159377446, 365468971, 557821061, 730937942, 1115642122, 1514085737, 3028171474, 10598600159, 21197200318]

約数ペア:

[(1, 21197200318), (2, 10598600159), (7, 3028171474), (14, 1514085737), (19, 1115642122), (29, 730937942), (38, 557821061), (58, 365468971), (133, 159377446), (203, 104419706), (266, 79688723), (406, 52209853), (551, 38470418), (821, 25818758), (1102, 19235209), (1642, 12909379), (3347, 6333194), (3857, 5495774), (5747, 3688394), (6694, 3166597), (7714, 2747887), (11494, 1844197), (15599, 1358882), (23429, 904742), (23809, 890302), (31198, 679441), (46858, 452371), (47618, 445151), (63593, 333326), (97063, 218386), (109193, 194126), (127186, 166663)]