20584720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19793}}^1$

素因数の和:19819

約数の個数: 40

約数和(自身を含む): 51543576

約数和(自身を除く): 30958856

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19793, 39586, 79172, 98965, 158344, 197930, 257309, 316688, 395860, 514618, 791720, 1029236, 1286545, 1583440, 2058472, 2573090, 4116944, 5146180, 10292360, 20584720]

約数ペア:

[(1, 20584720), (2, 10292360), (4, 5146180), (5, 4116944), (8, 2573090), (10, 2058472), (13, 1583440), (16, 1286545), (20, 1029236), (26, 791720), (40, 514618), (52, 395860), (65, 316688), (80, 257309), (104, 197930), (130, 158344), (208, 98965), (260, 79172), (520, 39586), (1040, 19793)]