21077042

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20394958

約数列:

[1, 2, 7, 14, 17, 19, 34, 38, 59, 79, 118, 119, 133, 158, 238, 266, 323, 413, 553, 646, 826, 1003, 1106, 1121, 1343, 1501, 2006, 2242, 2261, 2686, 3002, 4522, 4661, 7021, 7847, 9322, 9401, 10507, 14042, 15694, 18802, 19057, 21014, 25517, 32627, 38114, 51034, 65254, 79237, 88559, 133399, 158474, 177118, 178619, 266798, 357238, 554659, 619913, 1109318, 1239826, 1505503, 3011006, 10538521, 21077042]

約数ペア:

[(1, 21077042), (2, 10538521), (7, 3011006), (14, 1505503), (17, 1239826), (19, 1109318), (34, 619913), (38, 554659), (59, 357238), (79, 266798), (118, 178619), (119, 177118), (133, 158474), (158, 133399), (238, 88559), (266, 79237), (323, 65254), (413, 51034), (553, 38114), (646, 32627), (826, 25517), (1003, 21014), (1106, 19057), (1121, 18802), (1343, 15694), (1501, 14042), (2006, 10507), (2242, 9401), (2261, 9322), (2686, 7847), (3002, 7021), (4522, 4661)]