991867580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{10709}}^1$

素因数の和:11150

約数の個数: 48

約数和(自身を含む): 2277888480

約数和(自身を除く): 1286020900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 421, 842, 1684, 2105, 4210, 4631, 8420, 9262, 10709, 18524, 21418, 23155, 42836, 46310, 53545, 92620, 107090, 117799, 214180, 235598, 471196, 588995, 1177990, 2355980, 4508489, 9016978, 18033956, 22542445, 45084890, 49593379, 90169780, 99186758, 198373516, 247966895, 495933790, 991867580]

約数ペア:

[(1, 991867580), (2, 495933790), (4, 247966895), (5, 198373516), (10, 99186758), (11, 90169780), (20, 49593379), (22, 45084890), (44, 22542445), (55, 18033956), (110, 9016978), (220, 4508489), (421, 2355980), (842, 1177990), (1684, 588995), (2105, 471196), (4210, 235598), (4631, 214180), (8420, 117799), (9262, 107090), (10709, 92620), (18524, 53545), (21418, 46310), (23155, 42836)]