28235480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7757}}^1$

素因数の和:7788

約数の個数: 64

約数和(自身を含む): 78200640

約数和(自身を除く): 49965160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 7757, 15514, 31028, 38785, 54299, 62056, 77570, 100841, 108598, 155140, 201682, 217196, 271495, 310280, 403364, 434392, 504205, 542990, 705887, 806728, 1008410, 1085980, 1411774, 2016820, 2171960, 2823548, 3529435, 4033640, 5647096, 7058870, 14117740, 28235480]

約数ペア:

[(1, 28235480), (2, 14117740), (4, 7058870), (5, 5647096), (7, 4033640), (8, 3529435), (10, 2823548), (13, 2171960), (14, 2016820), (20, 1411774), (26, 1085980), (28, 1008410), (35, 806728), (40, 705887), (52, 542990), (56, 504205), (65, 434392), (70, 403364), (91, 310280), (104, 271495), (130, 217196), (140, 201682), (182, 155140), (260, 108598), (280, 100841), (364, 77570), (455, 62056), (520, 54299), (728, 38785), (910, 31028), (1820, 15514), (3640, 7757)]