19904705

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{6329}}^1$

素因数の和:6388

約数の個数: 16

約数和(自身を含む): 25978320

約数和(自身を除く): 6073615

約数列:

[1, 5, 17, 37, 85, 185, 629, 3145, 6329, 31645, 107593, 234173, 537965, 1170865, 3980941, 19904705]

約数ペア:

[(1, 19904705), (5, 3980941), (17, 1170865), (37, 537965), (85, 234173), (185, 107593), (629, 31645), (3145, 6329)]