21945266

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 43960320

約数和(自身を除く): 22015054

約数列:

[1, 2, 7, 14, 17, 19, 23, 34, 38, 46, 119, 133, 161, 211, 238, 266, 322, 323, 391, 422, 437, 646, 782, 874, 1477, 2261, 2737, 2954, 3059, 3587, 4009, 4522, 4853, 5474, 6118, 7174, 7429, 8018, 9706, 14858, 25109, 28063, 33971, 50218, 52003, 56126, 67942, 68153, 82501, 92207, 104006, 136306, 165002, 184414, 477071, 577507, 645449, 954142, 1155014, 1290898, 1567519, 3135038, 10972633, 21945266]

約数ペア:

[(1, 21945266), (2, 10972633), (7, 3135038), (14, 1567519), (17, 1290898), (19, 1155014), (23, 954142), (34, 645449), (38, 577507), (46, 477071), (119, 184414), (133, 165002), (161, 136306), (211, 104006), (238, 92207), (266, 82501), (322, 68153), (323, 67942), (391, 56126), (422, 52003), (437, 50218), (646, 33971), (782, 28063), (874, 25109), (1477, 14858), (2261, 9706), (2737, 8018), (2954, 7429), (3059, 7174), (3587, 6118), (4009, 5474), (4522, 4853)]