64737880

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{4339}}^1$

素因数の和:4723

約数の個数: 32

約数和(自身を含む): 146084400

約数和(自身を除く): 81346520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1492, 1865, 2984, 3730, 4339, 7460, 8678, 14920, 17356, 21695, 34712, 43390, 86780, 173560, 1618447, 3236894, 6473788, 8092235, 12947576, 16184470, 32368940, 64737880]

約数ペア:

[(1, 64737880), (2, 32368940), (4, 16184470), (5, 12947576), (8, 8092235), (10, 6473788), (20, 3236894), (40, 1618447), (373, 173560), (746, 86780), (1492, 43390), (1865, 34712), (2984, 21695), (3730, 17356), (4339, 14920), (7460, 8678)]