1972985555

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1\times {\mathrm{1553}}^1$

素因数の和:1931

約数の個数: 32

約数和(自身を含む): 2559997440

約数和(自身を除く): 587011885

約数列:

[1, 5, 19, 43, 95, 215, 311, 817, 1553, 1555, 4085, 5909, 7765, 13373, 29507, 29545, 66779, 66865, 147535, 254087, 333895, 482983, 1268801, 1270435, 2414915, 6344005, 9176677, 20768269, 45883385, 103841345, 394597111, 1972985555]

約数ペア:

[(1, 1972985555), (5, 394597111), (19, 103841345), (43, 45883385), (95, 20768269), (215, 9176677), (311, 6344005), (817, 2414915), (1553, 1270435), (1555, 1268801), (4085, 482983), (5909, 333895), (7765, 254087), (13373, 147535), (29507, 66865), (29545, 66779)]