18958720

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2693}}^1$

素因数の和:2723

約数の個数: 64

約数和(自身を含む): 49461840

約数和(自身を除く): 30503120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 2693, 3520, 5386, 7040, 10772, 13465, 21544, 26930, 29623, 43088, 53860, 59246, 86176, 107720, 118492, 148115, 172352, 215440, 236984, 296230, 344704, 430880, 473968, 592460, 861760, 947936, 1184920, 1723520, 1895872, 2369840, 3791744, 4739680, 9479360, 18958720]

約数ペア:

[(1, 18958720), (2, 9479360), (4, 4739680), (5, 3791744), (8, 2369840), (10, 1895872), (11, 1723520), (16, 1184920), (20, 947936), (22, 861760), (32, 592460), (40, 473968), (44, 430880), (55, 344704), (64, 296230), (80, 236984), (88, 215440), (110, 172352), (128, 148115), (160, 118492), (176, 107720), (220, 86176), (320, 59246), (352, 53860), (440, 43088), (640, 29623), (704, 26930), (880, 21544), (1408, 13465), (1760, 10772), (2693, 7040), (3520, 5386)]