21839272

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{229}}^1$

素因数の和:386

約数の個数: 64

約数和(自身を含む): 51004800

約数和(自身を除く): 29165528

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 131, 182, 229, 262, 364, 458, 524, 728, 916, 917, 1048, 1603, 1703, 1832, 1834, 2977, 3206, 3406, 3668, 5954, 6412, 6812, 7336, 11908, 11921, 12824, 13624, 20839, 23816, 23842, 29999, 41678, 47684, 59998, 83356, 95368, 119996, 166712, 209993, 239992, 389987, 419986, 779974, 839972, 1559948, 1679944, 2729909, 3119896, 5459818, 10919636, 21839272]

約数ペア:

[(1, 21839272), (2, 10919636), (4, 5459818), (7, 3119896), (8, 2729909), (13, 1679944), (14, 1559948), (26, 839972), (28, 779974), (52, 419986), (56, 389987), (91, 239992), (104, 209993), (131, 166712), (182, 119996), (229, 95368), (262, 83356), (364, 59998), (458, 47684), (524, 41678), (728, 29999), (916, 23842), (917, 23816), (1048, 20839), (1603, 13624), (1703, 12824), (1832, 11921), (1834, 11908), (2977, 7336), (3206, 6812), (3406, 6412), (3668, 5954)]