21255542

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:413

約数の個数: 64

約数和(自身を含む): 44043264

約数和(自身を除く): 22787722

約数列:

[1, 2, 7, 11, 14, 17, 22, 23, 34, 46, 77, 119, 154, 161, 187, 238, 253, 322, 353, 374, 391, 506, 706, 782, 1309, 1771, 2471, 2618, 2737, 3542, 3883, 4301, 4942, 5474, 6001, 7766, 8119, 8602, 12002, 16238, 27181, 30107, 42007, 54362, 56833, 60214, 66011, 84014, 89309, 113666, 132022, 138023, 178618, 276046, 462077, 625163, 924154, 966161, 1250326, 1518253, 1932322, 3036506, 10627771, 21255542]

約数ペア:

[(1, 21255542), (2, 10627771), (7, 3036506), (11, 1932322), (14, 1518253), (17, 1250326), (22, 966161), (23, 924154), (34, 625163), (46, 462077), (77, 276046), (119, 178618), (154, 138023), (161, 132022), (187, 113666), (238, 89309), (253, 84014), (322, 66011), (353, 60214), (374, 56833), (391, 54362), (506, 42007), (706, 30107), (782, 27181), (1309, 16238), (1771, 12002), (2471, 8602), (2618, 8119), (2737, 7766), (3542, 6001), (3883, 5474), (4301, 4942)]