21335360

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1093}}^1$

素因数の和:1171

約数の個数: 56

約数和(自身を含む): 51684936

約数和(自身を除く): 30349576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 244, 305, 320, 488, 610, 976, 1093, 1220, 1952, 2186, 2440, 3904, 4372, 4880, 5465, 8744, 9760, 10930, 17488, 19520, 21860, 34976, 43720, 66673, 69952, 87440, 133346, 174880, 266692, 333365, 349760, 533384, 666730, 1066768, 1333460, 2133536, 2666920, 4267072, 5333840, 10667680, 21335360]

約数ペア:

[(1, 21335360), (2, 10667680), (4, 5333840), (5, 4267072), (8, 2666920), (10, 2133536), (16, 1333460), (20, 1066768), (32, 666730), (40, 533384), (61, 349760), (64, 333365), (80, 266692), (122, 174880), (160, 133346), (244, 87440), (305, 69952), (320, 66673), (488, 43720), (610, 34976), (976, 21860), (1093, 19520), (1220, 17488), (1952, 10930), (2186, 9760), (2440, 8744), (3904, 5465), (4372, 4880)]