39980980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{419}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 90881280

約数和(自身を除く): 50900300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 367, 419, 734, 838, 1468, 1676, 1835, 2095, 3670, 4190, 4771, 5447, 7340, 8380, 9542, 10894, 19084, 21788, 23855, 27235, 47710, 54470, 95420, 108940, 153773, 307546, 615092, 768865, 1537730, 1999049, 3075460, 3998098, 7996196, 9995245, 19990490, 39980980]

約数ペア:

[(1, 39980980), (2, 19990490), (4, 9995245), (5, 7996196), (10, 3998098), (13, 3075460), (20, 1999049), (26, 1537730), (52, 768865), (65, 615092), (130, 307546), (260, 153773), (367, 108940), (419, 95420), (734, 54470), (838, 47710), (1468, 27235), (1676, 23855), (1835, 21788), (2095, 19084), (3670, 10894), (4190, 9542), (4771, 8380), (5447, 7340)]