21295040

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5119}}^1$

素因数の和:5149

約数の個数: 56

約数和(自身を含む): 54620160

約数和(自身を除く): 33325120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 5119, 10238, 20476, 25595, 40952, 51190, 66547, 81904, 102380, 133094, 163808, 204760, 266188, 327616, 332735, 409520, 532376, 665470, 819040, 1064752, 1330940, 1638080, 2129504, 2661880, 4259008, 5323760, 10647520, 21295040]

約数ペア:

[(1, 21295040), (2, 10647520), (4, 5323760), (5, 4259008), (8, 2661880), (10, 2129504), (13, 1638080), (16, 1330940), (20, 1064752), (26, 819040), (32, 665470), (40, 532376), (52, 409520), (64, 332735), (65, 327616), (80, 266188), (104, 204760), (130, 163808), (160, 133094), (208, 102380), (260, 81904), (320, 66547), (416, 51190), (520, 40952), (832, 25595), (1040, 20476), (2080, 10238), (4160, 5119)]