15556220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 34122816

約数和(自身を除く): 18566596

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 205, 244, 305, 311, 410, 610, 622, 820, 1220, 1244, 1555, 2501, 3110, 5002, 6220, 10004, 12505, 12751, 18971, 25010, 25502, 37942, 50020, 51004, 63755, 75884, 94855, 127510, 189710, 255020, 379420, 777811, 1555622, 3111244, 3889055, 7778110, 15556220]

約数ペア:

[(1, 15556220), (2, 7778110), (4, 3889055), (5, 3111244), (10, 1555622), (20, 777811), (41, 379420), (61, 255020), (82, 189710), (122, 127510), (164, 94855), (205, 75884), (244, 63755), (305, 51004), (311, 50020), (410, 37942), (610, 25502), (622, 25010), (820, 18971), (1220, 12751), (1244, 12505), (1555, 10004), (2501, 6220), (3110, 5002)]