18727996

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 41368320

約数和(自身を除く): 22640324

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 47, 49, 76, 94, 98, 107, 133, 188, 196, 214, 266, 329, 428, 532, 658, 749, 893, 931, 1316, 1498, 1786, 1862, 2033, 2303, 2996, 3572, 3724, 4066, 4606, 5029, 5243, 6251, 8132, 9212, 10058, 10486, 12502, 14231, 20116, 20972, 25004, 28462, 35203, 43757, 56924, 70406, 87514, 95551, 99617, 140812, 175028, 191102, 199234, 246421, 382204, 398468, 492842, 668857, 985684, 1337714, 2675428, 4681999, 9363998, 18727996]

約数ペア:

[(1, 18727996), (2, 9363998), (4, 4681999), (7, 2675428), (14, 1337714), (19, 985684), (28, 668857), (38, 492842), (47, 398468), (49, 382204), (76, 246421), (94, 199234), (98, 191102), (107, 175028), (133, 140812), (188, 99617), (196, 95551), (214, 87514), (266, 70406), (329, 56924), (428, 43757), (532, 35203), (658, 28462), (749, 25004), (893, 20972), (931, 20116), (1316, 14231), (1498, 12502), (1786, 10486), (1862, 10058), (2033, 9212), (2303, 8132), (2996, 6251), (3572, 5243), (3724, 5029), (4066, 4606)]