19185980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2357}}^1$

素因数の和:2414

約数の個数: 48

約数和(自身を含む): 45160416

約数和(自身を除く): 25974436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2357, 4070, 4714, 8140, 9428, 11785, 23570, 25927, 47140, 51854, 87209, 103708, 129635, 174418, 259270, 348836, 436045, 518540, 872090, 959299, 1744180, 1918598, 3837196, 4796495, 9592990, 19185980]

約数ペア:

[(1, 19185980), (2, 9592990), (4, 4796495), (5, 3837196), (10, 1918598), (11, 1744180), (20, 959299), (22, 872090), (37, 518540), (44, 436045), (55, 348836), (74, 259270), (110, 174418), (148, 129635), (185, 103708), (220, 87209), (370, 51854), (407, 47140), (740, 25927), (814, 23570), (1628, 11785), (2035, 9428), (2357, 8140), (4070, 4714)]