28929880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{373}}^1$

素因数の和:668

約数の個数: 64

約数和(自身を含む): 74859840

約数和(自身を除く): 45929960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 277, 280, 373, 554, 746, 1108, 1385, 1492, 1865, 1939, 2216, 2611, 2770, 2984, 3730, 3878, 5222, 5540, 7460, 7756, 9695, 10444, 11080, 13055, 14920, 15512, 19390, 20888, 26110, 38780, 52220, 77560, 103321, 104440, 206642, 413284, 516605, 723247, 826568, 1033210, 1446494, 2066420, 2892988, 3616235, 4132840, 5785976, 7232470, 14464940, 28929880]

約数ペア:

[(1, 28929880), (2, 14464940), (4, 7232470), (5, 5785976), (7, 4132840), (8, 3616235), (10, 2892988), (14, 2066420), (20, 1446494), (28, 1033210), (35, 826568), (40, 723247), (56, 516605), (70, 413284), (140, 206642), (277, 104440), (280, 103321), (373, 77560), (554, 52220), (746, 38780), (1108, 26110), (1385, 20888), (1492, 19390), (1865, 15512), (1939, 14920), (2216, 13055), (2611, 11080), (2770, 10444), (2984, 9695), (3730, 7756), (3878, 7460), (5222, 5540)]