728898260

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1\times {\mathrm{1301}}^1$

素因数の和:1676

約数の個数: 48

約数和(自身を含む): 1551931920

約数和(自身を除く): 823033660

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 257, 436, 514, 545, 1028, 1090, 1285, 1301, 2180, 2570, 2602, 5140, 5204, 6505, 13010, 26020, 28013, 56026, 112052, 140065, 141809, 280130, 283618, 334357, 560260, 567236, 668714, 709045, 1337428, 1418090, 1671785, 2836180, 3343570, 6687140, 36444913, 72889826, 145779652, 182224565, 364449130, 728898260]

約数ペア:

[(1, 728898260), (2, 364449130), (4, 182224565), (5, 145779652), (10, 72889826), (20, 36444913), (109, 6687140), (218, 3343570), (257, 2836180), (436, 1671785), (514, 1418090), (545, 1337428), (1028, 709045), (1090, 668714), (1285, 567236), (1301, 560260), (2180, 334357), (2570, 283618), (2602, 280130), (5140, 141809), (5204, 140065), (6505, 112052), (13010, 56026), (26020, 28013)]