997880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1$

素因数の和:144

約数の個数: 64

約数和(自身を含む): 2570400

約数和(自身を除く): 1572520

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 101, 104, 130, 152, 190, 202, 247, 260, 380, 404, 494, 505, 520, 760, 808, 988, 1010, 1235, 1313, 1919, 1976, 2020, 2470, 2626, 3838, 4040, 4940, 5252, 6565, 7676, 9595, 9880, 10504, 13130, 15352, 19190, 24947, 26260, 38380, 49894, 52520, 76760, 99788, 124735, 199576, 249470, 498940, 997880]

約数ペア:

[(1, 997880), (2, 498940), (4, 249470), (5, 199576), (8, 124735), (10, 99788), (13, 76760), (19, 52520), (20, 49894), (26, 38380), (38, 26260), (40, 24947), (52, 19190), (65, 15352), (76, 13130), (95, 10504), (101, 9880), (104, 9595), (130, 7676), (152, 6565), (190, 5252), (202, 4940), (247, 4040), (260, 3838), (380, 2626), (404, 2470), (494, 2020), (505, 1976), (520, 1919), (760, 1313), (808, 1235), (988, 1010)]