19865248

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^2$

素因数の和:146

約数の個数: 72

約数和(自身を含む): 45452988

約数和(自身を除く): 25587740

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 53, 68, 104, 106, 136, 208, 212, 221, 272, 416, 424, 442, 544, 689, 848, 884, 901, 1378, 1696, 1768, 1802, 2756, 2809, 3536, 3604, 5512, 5618, 7072, 7208, 11024, 11236, 11713, 14416, 22048, 22472, 23426, 28832, 36517, 44944, 46852, 47753, 73034, 89888, 93704, 95506, 146068, 187408, 191012, 292136, 374816, 382024, 584272, 620789, 764048, 1168544, 1241578, 1528096, 2483156, 4966312, 9932624, 19865248]

約数ペア:

[(1, 19865248), (2, 9932624), (4, 4966312), (8, 2483156), (13, 1528096), (16, 1241578), (17, 1168544), (26, 764048), (32, 620789), (34, 584272), (52, 382024), (53, 374816), (68, 292136), (104, 191012), (106, 187408), (136, 146068), (208, 95506), (212, 93704), (221, 89888), (272, 73034), (416, 47753), (424, 46852), (442, 44944), (544, 36517), (689, 28832), (848, 23426), (884, 22472), (901, 22048), (1378, 14416), (1696, 11713), (1768, 11236), (1802, 11024), (2756, 7208), (2809, 7072), (3536, 5618), (3604, 5512)]