2000800

素因数分解:

$2^5\times 5^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:122

約数の個数: 72

約数和(自身を含む): 5085612

約数和(自身を除く): 3084812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 61, 80, 82, 100, 122, 160, 164, 200, 205, 244, 305, 328, 400, 410, 488, 610, 656, 800, 820, 976, 1025, 1220, 1312, 1525, 1640, 1952, 2050, 2440, 2501, 3050, 3280, 4100, 4880, 5002, 6100, 6560, 8200, 9760, 10004, 12200, 12505, 16400, 20008, 24400, 25010, 32800, 40016, 48800, 50020, 62525, 80032, 100040, 125050, 200080, 250100, 400160, 500200, 1000400, 2000800]

約数ペア:

[(1, 2000800), (2, 1000400), (4, 500200), (5, 400160), (8, 250100), (10, 200080), (16, 125050), (20, 100040), (25, 80032), (32, 62525), (40, 50020), (41, 48800), (50, 40016), (61, 32800), (80, 25010), (82, 24400), (100, 20008), (122, 16400), (160, 12505), (164, 12200), (200, 10004), (205, 9760), (244, 8200), (305, 6560), (328, 6100), (400, 5002), (410, 4880), (488, 4100), (610, 3280), (656, 3050), (800, 2501), (820, 2440), (976, 2050), (1025, 1952), (1220, 1640), (1312, 1525)]