19805236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 39497472

約数和(自身を除く): 19692236

約数列:

[1, 2, 4, 11, 22, 44, 47, 61, 94, 122, 157, 188, 244, 314, 517, 628, 671, 1034, 1342, 1727, 2068, 2684, 2867, 3454, 5734, 6908, 7379, 9577, 11468, 14758, 19154, 29516, 31537, 38308, 63074, 81169, 105347, 126148, 162338, 210694, 324676, 421388, 450119, 900238, 1800476, 4951309, 9902618, 19805236]

約数ペア:

[(1, 19805236), (2, 9902618), (4, 4951309), (11, 1800476), (22, 900238), (44, 450119), (47, 421388), (61, 324676), (94, 210694), (122, 162338), (157, 126148), (188, 105347), (244, 81169), (314, 63074), (517, 38308), (628, 31537), (671, 29516), (1034, 19154), (1342, 14758), (1727, 11468), (2068, 9577), (2684, 7379), (2867, 6908), (3454, 5734)]