1971789872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{1997}}^1$

素因数の和:2166

約数の個数: 80

約数和(自身を含む): 4245478272

約数和(自身を除く): 2273688400

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 101, 104, 188, 202, 208, 376, 404, 611, 752, 808, 1222, 1313, 1616, 1997, 2444, 2626, 3994, 4747, 4888, 5252, 7988, 9494, 9776, 10504, 15976, 18988, 21008, 25961, 31952, 37976, 51922, 61711, 75952, 93859, 103844, 123422, 187718, 201697, 207688, 246844, 375436, 403394, 415376, 493688, 750872, 806788, 987376, 1220167, 1501744, 1613576, 2440334, 2622061, 3227152, 4880668, 5244122, 9479759, 9761336, 10488244, 18959518, 19522672, 20976488, 37919036, 41952976, 75838072, 123236867, 151676144, 246473734, 492947468, 985894936, 1971789872]

約数ペア:

[(1, 1971789872), (2, 985894936), (4, 492947468), (8, 246473734), (13, 151676144), (16, 123236867), (26, 75838072), (47, 41952976), (52, 37919036), (94, 20976488), (101, 19522672), (104, 18959518), (188, 10488244), (202, 9761336), (208, 9479759), (376, 5244122), (404, 4880668), (611, 3227152), (752, 2622061), (808, 2440334), (1222, 1613576), (1313, 1501744), (1616, 1220167), (1997, 987376), (2444, 806788), (2626, 750872), (3994, 493688), (4747, 415376), (4888, 403394), (5252, 375436), (7988, 246844), (9494, 207688), (9776, 201697), (10504, 187718), (15976, 123422), (18988, 103844), (21008, 93859), (25961, 75952), (31952, 61711), (37976, 51922)]