21979674

素因数分解:

$2^1\times 3^4\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{347}}^1$

素因数の和:401

約数の個数: 80

約数和(自身を含む): 54571968

約数和(自身を除く): 32592294

約数列:

[1, 2, 3, 6, 9, 17, 18, 23, 27, 34, 46, 51, 54, 69, 81, 102, 138, 153, 162, 207, 306, 347, 391, 414, 459, 621, 694, 782, 918, 1041, 1173, 1242, 1377, 1863, 2082, 2346, 2754, 3123, 3519, 3726, 5899, 6246, 7038, 7981, 9369, 10557, 11798, 15962, 17697, 18738, 21114, 23943, 28107, 31671, 35394, 47886, 53091, 56214, 63342, 71829, 106182, 135677, 143658, 159273, 215487, 271354, 318546, 407031, 430974, 477819, 646461, 814062, 955638, 1221093, 1292922, 2442186, 3663279, 7326558, 10989837, 21979674]

約数ペア:

[(1, 21979674), (2, 10989837), (3, 7326558), (6, 3663279), (9, 2442186), (17, 1292922), (18, 1221093), (23, 955638), (27, 814062), (34, 646461), (46, 477819), (51, 430974), (54, 407031), (69, 318546), (81, 271354), (102, 215487), (138, 159273), (153, 143658), (162, 135677), (207, 106182), (306, 71829), (347, 63342), (391, 56214), (414, 53091), (459, 47886), (621, 35394), (694, 31671), (782, 28107), (918, 23943), (1041, 21114), (1173, 18738), (1242, 17697), (1377, 15962), (1863, 11798), (2082, 10557), (2346, 9369), (2754, 7981), (3123, 7038), (3519, 6246), (3726, 5899)]