400494304

素因数分解:

$2^5\times 7^1\times {\mathrm{89}}^1\times {\mathrm{20089}}^1$

素因数の和:20195

約数の個数: 48

約数和(自身を含む): 911282400

約数和(自身を除く): 510788096

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 89, 112, 178, 224, 356, 623, 712, 1246, 1424, 2492, 2848, 4984, 9968, 19936, 20089, 40178, 80356, 140623, 160712, 281246, 321424, 562492, 642848, 1124984, 1787921, 2249968, 3575842, 4499936, 7151684, 12515447, 14303368, 25030894, 28606736, 50061788, 57213472, 100123576, 200247152, 400494304]

約数ペア:

[(1, 400494304), (2, 200247152), (4, 100123576), (7, 57213472), (8, 50061788), (14, 28606736), (16, 25030894), (28, 14303368), (32, 12515447), (56, 7151684), (89, 4499936), (112, 3575842), (178, 2249968), (224, 1787921), (356, 1124984), (623, 642848), (712, 562492), (1246, 321424), (1424, 281246), (2492, 160712), (2848, 140623), (4984, 80356), (9968, 40178), (19936, 20089)]