721108128

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^4\times {\mathrm{263}}^1$

素因数の和:328

約数の個数: 120

約数和(自身を含む): 2058442848

約数和(自身を除く): 1337334720

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 169, 208, 263, 312, 338, 416, 507, 526, 624, 676, 789, 1014, 1052, 1248, 1352, 1578, 2028, 2104, 2197, 2704, 3156, 3419, 4056, 4208, 4394, 5408, 6312, 6591, 6838, 8112, 8416, 8788, 10257, 12624, 13182, 13676, 16224, 17576, 20514, 25248, 26364, 27352, 28561, 35152, 41028, 44447, 52728, 54704, 57122, 70304, 82056, 85683, 88894, 105456, 109408, 114244, 133341, 164112, 171366, 177788, 210912, 228488, 266682, 328224, 342732, 355576, 456976, 533364, 577811, 685464, 711152, 913952, 1066728, 1155622, 1370928, 1422304, 1733433, 2133456, 2311244, 2741856, 3466866, 4266912, 4622488, 6933732, 7511543, 9244976, 13867464, 15023086, 18489952, 22534629, 27734928, 30046172, 45069258, 55469856, 60092344, 90138516, 120184688, 180277032, 240369376, 360554064, 721108128]

約数ペア:

[(1, 721108128), (2, 360554064), (3, 240369376), (4, 180277032), (6, 120184688), (8, 90138516), (12, 60092344), (13, 55469856), (16, 45069258), (24, 30046172), (26, 27734928), (32, 22534629), (39, 18489952), (48, 15023086), (52, 13867464), (78, 9244976), (96, 7511543), (104, 6933732), (156, 4622488), (169, 4266912), (208, 3466866), (263, 2741856), (312, 2311244), (338, 2133456), (416, 1733433), (507, 1422304), (526, 1370928), (624, 1155622), (676, 1066728), (789, 913952), (1014, 711152), (1052, 685464), (1248, 577811), (1352, 533364), (1578, 456976), (2028, 355576), (2104, 342732), (2197, 328224), (2704, 266682), (3156, 228488), (3419, 210912), (4056, 177788), (4208, 171366), (4394, 164112), (5408, 133341), (6312, 114244), (6591, 109408), (6838, 105456), (8112, 88894), (8416, 85683), (8788, 82056), (10257, 70304), (12624, 57122), (13182, 54704), (13676, 52728), (16224, 44447), (17576, 41028), (20514, 35152), (25248, 28561), (26364, 27352)]