21228172

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:335

約数の個数: 72

約数和(自身を含む): 47918304

約数和(自身を除く): 26690132

約数列:

[1, 2, 4, 7, 14, 17, 23, 28, 34, 46, 49, 68, 92, 98, 119, 161, 196, 238, 277, 322, 391, 476, 554, 644, 782, 833, 1108, 1127, 1564, 1666, 1939, 2254, 2737, 3332, 3878, 4508, 4709, 5474, 6371, 7756, 9418, 10948, 12742, 13573, 18836, 19159, 25484, 27146, 32963, 38318, 44597, 54292, 65926, 76636, 89194, 108307, 131852, 178388, 216614, 230741, 312179, 433228, 461482, 624358, 758149, 922964, 1248716, 1516298, 3032596, 5307043, 10614086, 21228172]

約数ペア:

[(1, 21228172), (2, 10614086), (4, 5307043), (7, 3032596), (14, 1516298), (17, 1248716), (23, 922964), (28, 758149), (34, 624358), (46, 461482), (49, 433228), (68, 312179), (92, 230741), (98, 216614), (119, 178388), (161, 131852), (196, 108307), (238, 89194), (277, 76636), (322, 65926), (391, 54292), (476, 44597), (554, 38318), (644, 32963), (782, 27146), (833, 25484), (1108, 19159), (1127, 18836), (1564, 13573), (1666, 12742), (1939, 10948), (2254, 9418), (2737, 7756), (3332, 6371), (3878, 5474), (4508, 4709)]