20872196975

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{1601}}^1$

素因数の和:1761

約数の個数: 96

約数和(自身を含む): 32037949440

約数和(自身を除く): 11165752465

約数列:

[1, 5, 7, 23, 25, 35, 41, 79, 115, 161, 175, 205, 287, 395, 553, 575, 805, 943, 1025, 1435, 1601, 1817, 1975, 2765, 3239, 4025, 4715, 6601, 7175, 8005, 9085, 11207, 12719, 13825, 16195, 22673, 23575, 33005, 36823, 40025, 45425, 56035, 63595, 65641, 74497, 80975, 113365, 126479, 165025, 184115, 257761, 280175, 317975, 328205, 372485, 459487, 521479, 566825, 632395, 885353, 920575, 1288805, 1509743, 1641025, 1862425, 2297435, 2607395, 2909017, 3161975, 4426765, 5185639, 6444025, 7548715, 10568201, 11487175, 13036975, 14545085, 20363119, 22133825, 25928195, 36299473, 37743575, 52841005, 72725425, 101815595, 119269697, 129640975, 181497365, 264205025, 509077975, 596348485, 834887879, 907486825, 2981742425, 4174439395, 20872196975]

約数ペア:

[(1, 20872196975), (5, 4174439395), (7, 2981742425), (23, 907486825), (25, 834887879), (35, 596348485), (41, 509077975), (79, 264205025), (115, 181497365), (161, 129640975), (175, 119269697), (205, 101815595), (287, 72725425), (395, 52841005), (553, 37743575), (575, 36299473), (805, 25928195), (943, 22133825), (1025, 20363119), (1435, 14545085), (1601, 13036975), (1817, 11487175), (1975, 10568201), (2765, 7548715), (3239, 6444025), (4025, 5185639), (4715, 4426765), (6601, 3161975), (7175, 2909017), (8005, 2607395), (9085, 2297435), (11207, 1862425), (12719, 1641025), (13825, 1509743), (16195, 1288805), (22673, 920575), (23575, 885353), (33005, 632395), (36823, 566825), (40025, 521479), (45425, 459487), (56035, 372485), (63595, 328205), (65641, 317975), (74497, 280175), (80975, 257761), (113365, 184115), (126479, 165025)]