720445952

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2389}}^1$

素因数の和:2457

約数の個数: 80

約数和(自身を含む): 1564780800

約数和(自身を除く): 844334848

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 64, 76, 124, 128, 152, 248, 256, 304, 496, 512, 589, 608, 992, 1178, 1216, 1984, 2356, 2389, 2432, 3968, 4712, 4778, 4864, 7936, 9424, 9556, 9728, 15872, 18848, 19112, 37696, 38224, 45391, 74059, 75392, 76448, 90782, 148118, 150784, 152896, 181564, 296236, 301568, 305792, 363128, 592472, 611584, 726256, 1184944, 1223168, 1407121, 1452512, 2369888, 2814242, 2905024, 4739776, 5628484, 5810048, 9479552, 11256968, 11620096, 18959104, 22513936, 23240192, 37918208, 45027872, 90055744, 180111488, 360222976, 720445952]

約数ペア:

[(1, 720445952), (2, 360222976), (4, 180111488), (8, 90055744), (16, 45027872), (19, 37918208), (31, 23240192), (32, 22513936), (38, 18959104), (62, 11620096), (64, 11256968), (76, 9479552), (124, 5810048), (128, 5628484), (152, 4739776), (248, 2905024), (256, 2814242), (304, 2369888), (496, 1452512), (512, 1407121), (589, 1223168), (608, 1184944), (992, 726256), (1178, 611584), (1216, 592472), (1984, 363128), (2356, 305792), (2389, 301568), (2432, 296236), (3968, 181564), (4712, 152896), (4778, 150784), (4864, 148118), (7936, 90782), (9424, 76448), (9556, 75392), (9728, 74059), (15872, 45391), (18848, 38224), (19112, 37696)]