31311994

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:223

約数の個数: 48

約数和(自身を含む): 58354560

約数和(自身を除く): 27042566

約数列:

[1, 2, 7, 14, 17, 34, 71, 109, 119, 142, 218, 238, 289, 497, 578, 763, 994, 1207, 1526, 1853, 2023, 2414, 3706, 4046, 7739, 8449, 12971, 15478, 16898, 20519, 25942, 31501, 41038, 54173, 63002, 108346, 131563, 143633, 220507, 263126, 287266, 441014, 920941, 1841882, 2236571, 4473142, 15655997, 31311994]

約数ペア:

[(1, 31311994), (2, 15655997), (7, 4473142), (14, 2236571), (17, 1841882), (34, 920941), (71, 441014), (109, 287266), (119, 263126), (142, 220507), (218, 143633), (238, 131563), (289, 108346), (497, 63002), (578, 54173), (763, 41038), (994, 31501), (1207, 25942), (1526, 20519), (1853, 16898), (2023, 15478), (2414, 12971), (3706, 8449), (4046, 7739)]