20163665648

素因数分解:

$2^4\times 7^1\times {\mathrm{2251}}^1\times {\mathrm{79979}}^1$

素因数の和:82245

約数の個数: 40

約数和(自身を含む): 44668510080

約数和(自身を除く): 24504844432

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 2251, 4502, 9004, 15757, 18008, 31514, 36016, 63028, 79979, 126056, 159958, 252112, 319916, 559853, 639832, 1119706, 1279664, 2239412, 4478824, 8957648, 180032729, 360065458, 720130916, 1260229103, 1440261832, 2520458206, 2880523664, 5040916412, 10081832824, 20163665648]

約数ペア:

[(1, 20163665648), (2, 10081832824), (4, 5040916412), (7, 2880523664), (8, 2520458206), (14, 1440261832), (16, 1260229103), (28, 720130916), (56, 360065458), (112, 180032729), (2251, 8957648), (4502, 4478824), (9004, 2239412), (15757, 1279664), (18008, 1119706), (31514, 639832), (36016, 559853), (63028, 319916), (79979, 252112), (126056, 159958)]