19980459860

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{577}}^1\times {\mathrm{6737}}^1$

素因数の和:7580

約数の個数: 48

約数和(自身を含む): 42201495504

約数和(自身を除く): 22221035644

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 577, 1028, 1154, 1285, 2308, 2570, 2885, 5140, 5770, 6737, 11540, 13474, 26948, 33685, 67370, 134740, 148289, 296578, 593156, 741445, 1482890, 1731409, 2965780, 3462818, 3887249, 6925636, 7774498, 8657045, 15548996, 17314090, 19436245, 34628180, 38872490, 77744980, 999022993, 1998045986, 3996091972, 4995114965, 9990229930, 19980459860]

約数ペア:

[(1, 19980459860), (2, 9990229930), (4, 4995114965), (5, 3996091972), (10, 1998045986), (20, 999022993), (257, 77744980), (514, 38872490), (577, 34628180), (1028, 19436245), (1154, 17314090), (1285, 15548996), (2308, 8657045), (2570, 7774498), (2885, 6925636), (5140, 3887249), (5770, 3462818), (6737, 2965780), (11540, 1731409), (13474, 1482890), (26948, 741445), (33685, 593156), (67370, 296578), (134740, 148289)]