20405278

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{631}}^1$

素因数の和:712

約数の個数: 32

約数和(自身を含む): 34583040

約数和(自身を除く): 14177762

約数列:

[1, 2, 19, 23, 37, 38, 46, 74, 437, 631, 703, 851, 874, 1262, 1406, 1702, 11989, 14513, 16169, 23347, 23978, 29026, 32338, 46694, 275747, 443593, 536981, 551494, 887186, 1073962, 10202639, 20405278]

約数ペア:

[(1, 20405278), (2, 10202639), (19, 1073962), (23, 887186), (37, 551494), (38, 536981), (46, 443593), (74, 275747), (437, 46694), (631, 32338), (703, 29026), (851, 23978), (874, 23347), (1262, 16169), (1406, 14513), (1702, 11989)]