21329680

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4519}}^1$

素因数の和:4591

約数の個数: 40

約数和(自身を含む): 50443200

約数和(自身を除く): 29113520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4519, 4720, 9038, 18076, 22595, 36152, 45190, 72304, 90380, 180760, 266621, 361520, 533242, 1066484, 1333105, 2132968, 2666210, 4265936, 5332420, 10664840, 21329680]

約数ペア:

[(1, 21329680), (2, 10664840), (4, 5332420), (5, 4265936), (8, 2666210), (10, 2132968), (16, 1333105), (20, 1066484), (40, 533242), (59, 361520), (80, 266621), (118, 180760), (236, 90380), (295, 72304), (472, 45190), (590, 36152), (944, 22595), (1180, 18076), (2360, 9038), (4519, 4720)]