20080312

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 25538888

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 43, 56, 62, 86, 124, 172, 217, 248, 269, 301, 344, 434, 538, 602, 868, 1076, 1204, 1333, 1736, 1883, 2152, 2408, 2666, 3766, 5332, 7532, 8339, 9331, 10664, 11567, 15064, 16678, 18662, 23134, 33356, 37324, 46268, 58373, 66712, 74648, 80969, 92536, 116746, 161938, 233492, 323876, 358577, 466984, 647752, 717154, 1434308, 2510039, 2868616, 5020078, 10040156, 20080312]

約数ペア:

[(1, 20080312), (2, 10040156), (4, 5020078), (7, 2868616), (8, 2510039), (14, 1434308), (28, 717154), (31, 647752), (43, 466984), (56, 358577), (62, 323876), (86, 233492), (124, 161938), (172, 116746), (217, 92536), (248, 80969), (269, 74648), (301, 66712), (344, 58373), (434, 46268), (538, 37324), (602, 33356), (868, 23134), (1076, 18662), (1204, 16678), (1333, 15064), (1736, 11567), (1883, 10664), (2152, 9331), (2408, 8339), (2666, 7532), (3766, 5332)]