21091608

素因数分解:

$2^3\times 3^2\times {\mathrm{197}}^1\times {\mathrm{1487}}^1$

素因数の和:1696

約数の個数: 48

約数和(自身を含む): 57451680

約数和(自身を除く): 36360072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 197, 394, 591, 788, 1182, 1487, 1576, 1773, 2364, 2974, 3546, 4461, 4728, 5948, 7092, 8922, 11896, 13383, 14184, 17844, 26766, 35688, 53532, 107064, 292939, 585878, 878817, 1171756, 1757634, 2343512, 2636451, 3515268, 5272902, 7030536, 10545804, 21091608]

約数ペア:

[(1, 21091608), (2, 10545804), (3, 7030536), (4, 5272902), (6, 3515268), (8, 2636451), (9, 2343512), (12, 1757634), (18, 1171756), (24, 878817), (36, 585878), (72, 292939), (197, 107064), (394, 53532), (591, 35688), (788, 26766), (1182, 17844), (1487, 14184), (1576, 13383), (1773, 11896), (2364, 8922), (2974, 7092), (3546, 5948), (4461, 4728)]