19814536

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 44542080

約数和(自身を除く): 24727544

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 73, 74, 131, 146, 148, 259, 262, 292, 296, 511, 518, 524, 584, 917, 1022, 1036, 1048, 1834, 2044, 2072, 2701, 3668, 4088, 4847, 5402, 7336, 9563, 9694, 10804, 18907, 19126, 19388, 21608, 33929, 37814, 38252, 38776, 66941, 67858, 75628, 76504, 133882, 135716, 151256, 267764, 271432, 353831, 535528, 707662, 1415324, 2476817, 2830648, 4953634, 9907268, 19814536]

約数ペア:

[(1, 19814536), (2, 9907268), (4, 4953634), (7, 2830648), (8, 2476817), (14, 1415324), (28, 707662), (37, 535528), (56, 353831), (73, 271432), (74, 267764), (131, 151256), (146, 135716), (148, 133882), (259, 76504), (262, 75628), (292, 67858), (296, 66941), (511, 38776), (518, 38252), (524, 37814), (584, 33929), (917, 21608), (1022, 19388), (1036, 19126), (1048, 18907), (1834, 10804), (2044, 9694), (2072, 9563), (2701, 7336), (3668, 5402), (4088, 4847)]