21648536

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{227}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 50561280

約数和(自身を除く): 28912744

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 131, 182, 227, 262, 364, 454, 524, 728, 908, 917, 1048, 1589, 1703, 1816, 1834, 2951, 3178, 3406, 3668, 5902, 6356, 6812, 7336, 11804, 11921, 12712, 13624, 20657, 23608, 23842, 29737, 41314, 47684, 59474, 82628, 95368, 118948, 165256, 208159, 237896, 386581, 416318, 773162, 832636, 1546324, 1665272, 2706067, 3092648, 5412134, 10824268, 21648536]

約数ペア:

[(1, 21648536), (2, 10824268), (4, 5412134), (7, 3092648), (8, 2706067), (13, 1665272), (14, 1546324), (26, 832636), (28, 773162), (52, 416318), (56, 386581), (91, 237896), (104, 208159), (131, 165256), (182, 118948), (227, 95368), (262, 82628), (364, 59474), (454, 47684), (524, 41314), (728, 29737), (908, 23842), (917, 23608), (1048, 20657), (1589, 13624), (1703, 12712), (1816, 11921), (1834, 11804), (2951, 7336), (3178, 6812), (3406, 6356), (3668, 5902)]