19811330

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2339}}^1$

素因数の和:2375

約数の個数: 48

約数和(自身を含む): 44815680

約数和(自身を除く): 25004350

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 121, 154, 242, 385, 605, 770, 847, 1210, 1694, 2339, 4235, 4678, 8470, 11695, 16373, 23390, 25729, 32746, 51458, 81865, 128645, 163730, 180103, 257290, 283019, 360206, 566038, 900515, 1415095, 1801030, 1981133, 2830190, 3962266, 9905665, 19811330]

約数ペア:

[(1, 19811330), (2, 9905665), (5, 3962266), (7, 2830190), (10, 1981133), (11, 1801030), (14, 1415095), (22, 900515), (35, 566038), (55, 360206), (70, 283019), (77, 257290), (110, 180103), (121, 163730), (154, 128645), (242, 81865), (385, 51458), (605, 32746), (770, 25729), (847, 23390), (1210, 16373), (1694, 11695), (2339, 8470), (4235, 4678)]