19940940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{797}}^1$

素因数の和:951

約数の個数: 72

約数和(自身を含む): 60999120

約数和(自身を除く): 41058180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 797, 834, 1251, 1390, 1594, 1668, 2085, 2391, 2502, 2780, 3188, 3985, 4170, 4782, 5004, 6255, 7173, 7970, 8340, 9564, 11955, 12510, 14346, 15940, 23910, 25020, 28692, 35865, 47820, 71730, 110783, 143460, 221566, 332349, 443132, 553915, 664698, 997047, 1107830, 1329396, 1661745, 1994094, 2215660, 3323490, 3988188, 4985235, 6646980, 9970470, 19940940]

約数ペア:

[(1, 19940940), (2, 9970470), (3, 6646980), (4, 4985235), (5, 3988188), (6, 3323490), (9, 2215660), (10, 1994094), (12, 1661745), (15, 1329396), (18, 1107830), (20, 997047), (30, 664698), (36, 553915), (45, 443132), (60, 332349), (90, 221566), (139, 143460), (180, 110783), (278, 71730), (417, 47820), (556, 35865), (695, 28692), (797, 25020), (834, 23910), (1251, 15940), (1390, 14346), (1594, 12510), (1668, 11955), (2085, 9564), (2391, 8340), (2502, 7970), (2780, 7173), (3188, 6255), (3985, 5004), (4170, 4782)]