721765728

素因数分解:

$2^5\times 3^4\times {\mathrm{278459}}^1$

素因数の和:278481

約数の個数: 60

約数和(自身を含む): 2122700580

約数和(自身を除く): 1400934852

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 81, 96, 108, 144, 162, 216, 288, 324, 432, 648, 864, 1296, 2592, 278459, 556918, 835377, 1113836, 1670754, 2227672, 2506131, 3341508, 4455344, 5012262, 6683016, 7518393, 8910688, 10024524, 13366032, 15036786, 20049048, 22555179, 26732064, 30073572, 40098096, 45110358, 60147144, 80196192, 90220716, 120294288, 180441432, 240588576, 360882864, 721765728]

約数ペア:

[(1, 721765728), (2, 360882864), (3, 240588576), (4, 180441432), (6, 120294288), (8, 90220716), (9, 80196192), (12, 60147144), (16, 45110358), (18, 40098096), (24, 30073572), (27, 26732064), (32, 22555179), (36, 20049048), (48, 15036786), (54, 13366032), (72, 10024524), (81, 8910688), (96, 7518393), (108, 6683016), (144, 5012262), (162, 4455344), (216, 3341508), (288, 2506131), (324, 2227672), (432, 1670754), (648, 1113836), (864, 835377), (1296, 556918), (2592, 278459)]