21244288

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{751}}^1$

素因数の和:795

約数の個数: 64

約数和(自身を含む): 48323520

約数和(自身を除く): 27079232

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 128, 136, 208, 221, 272, 416, 442, 544, 751, 832, 884, 1088, 1502, 1664, 1768, 2176, 3004, 3536, 6008, 7072, 9763, 12016, 12767, 14144, 19526, 24032, 25534, 28288, 39052, 48064, 51068, 78104, 96128, 102136, 156208, 165971, 204272, 312416, 331942, 408544, 624832, 663884, 817088, 1249664, 1327768, 1634176, 2655536, 5311072, 10622144, 21244288]

約数ペア:

[(1, 21244288), (2, 10622144), (4, 5311072), (8, 2655536), (13, 1634176), (16, 1327768), (17, 1249664), (26, 817088), (32, 663884), (34, 624832), (52, 408544), (64, 331942), (68, 312416), (104, 204272), (128, 165971), (136, 156208), (208, 102136), (221, 96128), (272, 78104), (416, 51068), (442, 48064), (544, 39052), (751, 28288), (832, 25534), (884, 24032), (1088, 19526), (1502, 14144), (1664, 12767), (1768, 12016), (2176, 9763), (3004, 7072), (3536, 6008)]