81115580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6367}}^1$

素因数の和:6403

約数の個数: 72

約数和(自身を含む): 213429888

約数和(自身を除く): 132314308

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2548, 3185, 6367, 6370, 12734, 12740, 25468, 31835, 44569, 63670, 82771, 89138, 127340, 165542, 178276, 222845, 311983, 331084, 413855, 445690, 579397, 623966, 827710, 891380, 1158794, 1247932, 1559915, 1655420, 2317588, 2896985, 3119830, 4055779, 5793970, 6239660, 8111558, 11587940, 16223116, 20278895, 40557790, 81115580]

約数ペア:

[(1, 81115580), (2, 40557790), (4, 20278895), (5, 16223116), (7, 11587940), (10, 8111558), (13, 6239660), (14, 5793970), (20, 4055779), (26, 3119830), (28, 2896985), (35, 2317588), (49, 1655420), (52, 1559915), (65, 1247932), (70, 1158794), (91, 891380), (98, 827710), (130, 623966), (140, 579397), (182, 445690), (196, 413855), (245, 331084), (260, 311983), (364, 222845), (455, 178276), (490, 165542), (637, 127340), (910, 89138), (980, 82771), (1274, 63670), (1820, 44569), (2548, 31835), (3185, 25468), (6367, 12740), (6370, 12734)]