278229820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{6763}}^1$

素因数の和:6811

約数の個数: 72

約数和(自身を含む): 680106672

約数和(自身を除く): 401876852

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 121, 170, 187, 220, 242, 340, 374, 484, 605, 748, 935, 1210, 1870, 2057, 2420, 3740, 4114, 6763, 8228, 10285, 13526, 20570, 27052, 33815, 41140, 67630, 74393, 114971, 135260, 148786, 229942, 297572, 371965, 459884, 574855, 743930, 818323, 1149710, 1264681, 1487860, 1636646, 2299420, 2529362, 3273292, 4091615, 5058724, 6323405, 8183230, 12646810, 13911491, 16366460, 25293620, 27822982, 55645964, 69557455, 139114910, 278229820]

約数ペア:

[(1, 278229820), (2, 139114910), (4, 69557455), (5, 55645964), (10, 27822982), (11, 25293620), (17, 16366460), (20, 13911491), (22, 12646810), (34, 8183230), (44, 6323405), (55, 5058724), (68, 4091615), (85, 3273292), (110, 2529362), (121, 2299420), (170, 1636646), (187, 1487860), (220, 1264681), (242, 1149710), (340, 818323), (374, 743930), (484, 574855), (605, 459884), (748, 371965), (935, 297572), (1210, 229942), (1870, 148786), (2057, 135260), (2420, 114971), (3740, 74393), (4114, 67630), (6763, 41140), (8228, 33815), (10285, 27052), (13526, 20570)]