21197403760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20382119}}^1$

素因数の和:20382145

約数の個数: 40

約数和(自身を含む): 53075040480

約数和(自身を除く): 31877636720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 20382119, 40764238, 81528476, 101910595, 163056952, 203821190, 264967547, 326113904, 407642380, 529935094, 815284760, 1059870188, 1324837735, 1630569520, 2119740376, 2649675470, 4239480752, 5299350940, 10598701880, 21197403760]

約数ペア:

[(1, 21197403760), (2, 10598701880), (4, 5299350940), (5, 4239480752), (8, 2649675470), (10, 2119740376), (13, 1630569520), (16, 1324837735), (20, 1059870188), (26, 815284760), (40, 529935094), (52, 407642380), (65, 326113904), (80, 264967547), (104, 203821190), (130, 163056952), (208, 101910595), (260, 81528476), (520, 40764238), (1040, 20382119)]