1000400

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:120

約数の個数: 60

約数和(自身を含む): 2502444

約数和(自身を除く): 1502044

約数列:

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

約数ペア:

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