640279458

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4493}}^1$

素因数の和:4553

約数の個数: 128

約数和(自身を含む): 1811980800

約数和(自身を除く): 1171701342

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 29, 39, 42, 54, 58, 63, 78, 87, 91, 117, 126, 174, 182, 189, 203, 234, 261, 273, 351, 377, 378, 406, 522, 546, 609, 702, 754, 783, 819, 1131, 1218, 1566, 1638, 1827, 2262, 2457, 2639, 3393, 3654, 4493, 4914, 5278, 5481, 6786, 7917, 8986, 10179, 10962, 13479, 15834, 20358, 23751, 26958, 31451, 40437, 47502, 58409, 62902, 71253, 80874, 94353, 116818, 121311, 130297, 142506, 175227, 188706, 242622, 260594, 283059, 350454, 390891, 408863, 525681, 566118, 781782, 817726, 849177, 912079, 1051362, 1172673, 1226589, 1577043, 1693861, 1698354, 1824158, 2345346, 2453178, 2736237, 3154086, 3387722, 3518019, 3679767, 5081583, 5472474, 7036038, 7359534, 8208711, 10163166, 11039301, 11857027, 15244749, 16417422, 22078602, 23714054, 24626133, 30489498, 35571081, 45734247, 49252266, 71142162, 91468494, 106713243, 213426486, 320139729, 640279458]

約数ペア:

[(1, 640279458), (2, 320139729), (3, 213426486), (6, 106713243), (7, 91468494), (9, 71142162), (13, 49252266), (14, 45734247), (18, 35571081), (21, 30489498), (26, 24626133), (27, 23714054), (29, 22078602), (39, 16417422), (42, 15244749), (54, 11857027), (58, 11039301), (63, 10163166), (78, 8208711), (87, 7359534), (91, 7036038), (117, 5472474), (126, 5081583), (174, 3679767), (182, 3518019), (189, 3387722), (203, 3154086), (234, 2736237), (261, 2453178), (273, 2345346), (351, 1824158), (377, 1698354), (378, 1693861), (406, 1577043), (522, 1226589), (546, 1172673), (609, 1051362), (702, 912079), (754, 849177), (783, 817726), (819, 781782), (1131, 566118), (1218, 525681), (1566, 408863), (1638, 390891), (1827, 350454), (2262, 283059), (2457, 260594), (2639, 242622), (3393, 188706), (3654, 175227), (4493, 142506), (4914, 130297), (5278, 121311), (5481, 116818), (6786, 94353), (7917, 80874), (8986, 71253), (10179, 62902), (10962, 58409), (13479, 47502), (15834, 40437), (20358, 31451), (23751, 26958)]