21266658

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{127}}^1\times {\mathrm{443}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 54558720

約数和(自身を除く): 33292062

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 127, 189, 254, 378, 381, 443, 762, 886, 889, 1143, 1329, 1778, 2286, 2658, 2667, 3101, 3429, 3987, 5334, 6202, 6858, 7974, 8001, 9303, 11961, 16002, 18606, 23922, 24003, 27909, 48006, 55818, 56261, 83727, 112522, 167454, 168783, 337566, 393827, 506349, 787654, 1012698, 1181481, 1519047, 2362962, 3038094, 3544443, 7088886, 10633329, 21266658]

約数ペア:

[(1, 21266658), (2, 10633329), (3, 7088886), (6, 3544443), (7, 3038094), (9, 2362962), (14, 1519047), (18, 1181481), (21, 1012698), (27, 787654), (42, 506349), (54, 393827), (63, 337566), (126, 168783), (127, 167454), (189, 112522), (254, 83727), (378, 56261), (381, 55818), (443, 48006), (762, 27909), (886, 24003), (889, 23922), (1143, 18606), (1329, 16002), (1778, 11961), (2286, 9303), (2658, 8001), (2667, 7974), (3101, 6858), (3429, 6202), (3987, 5334)]