21544640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5179}}^1$

素因数の和:5209

約数の個数: 56

約数和(自身を含む): 55260240

約数和(自身を除く): 33715600

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, 5179, 10358, 20716, 25895, 41432, 51790, 67327, 82864, 103580, 134654, 165728, 207160, 269308, 331456, 336635, 414320, 538616, 673270, 828640, 1077232, 1346540, 1657280, 2154464, 2693080, 4308928, 5386160, 10772320, 21544640]

約数ペア:

[(1, 21544640), (2, 10772320), (4, 5386160), (5, 4308928), (8, 2693080), (10, 2154464), (13, 1657280), (16, 1346540), (20, 1077232), (26, 828640), (32, 673270), (40, 538616), (52, 414320), (64, 336635), (65, 331456), (80, 269308), (104, 207160), (130, 165728), (160, 134654), (208, 103580), (260, 82864), (320, 67327), (416, 51790), (520, 41432), (832, 25895), (1040, 20716), (2080, 10358), (4160, 5179)]