19788892780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{27827}}^1$

素因数の和:27935

約数の個数: 72

約数和(自身を含む): 44102593584

約数和(自身を除く): 24313700804

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 310, 370, 620, 740, 961, 1147, 1922, 2294, 3844, 4588, 4805, 5735, 9610, 11470, 19220, 22940, 27827, 35557, 55654, 71114, 111308, 139135, 142228, 177785, 278270, 355570, 556540, 711140, 862637, 1029599, 1725274, 2059198, 3450548, 4118396, 4313185, 5147995, 8626370, 10295990, 17252740, 20591980, 26741747, 31917569, 53483494, 63835138, 106966988, 127670276, 133708735, 159587845, 267417470, 319175690, 534834940, 638351380, 989444639, 1978889278, 3957778556, 4947223195, 9894446390, 19788892780]

約数ペア:

[(1, 19788892780), (2, 9894446390), (4, 4947223195), (5, 3957778556), (10, 1978889278), (20, 989444639), (31, 638351380), (37, 534834940), (62, 319175690), (74, 267417470), (124, 159587845), (148, 133708735), (155, 127670276), (185, 106966988), (310, 63835138), (370, 53483494), (620, 31917569), (740, 26741747), (961, 20591980), (1147, 17252740), (1922, 10295990), (2294, 8626370), (3844, 5147995), (4588, 4313185), (4805, 4118396), (5735, 3450548), (9610, 2059198), (11470, 1725274), (19220, 1029599), (22940, 862637), (27827, 711140), (35557, 556540), (55654, 355570), (71114, 278270), (111308, 177785), (139135, 142228)]