81489361720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{787489}}^1$

素因数の和:787712

約数の個数: 64

約数和(自身を含む): 198447480000

約数和(自身を除く): 116958118280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 199, 260, 398, 520, 796, 995, 1592, 1990, 2587, 3980, 5174, 7960, 10348, 12935, 20696, 25870, 51740, 103480, 787489, 1574978, 3149956, 3937445, 6299912, 7874890, 10237357, 15749780, 20474714, 31499560, 40949428, 51186785, 81898856, 102373570, 156710311, 204747140, 313420622, 409494280, 626841244, 783551555, 1253682488, 1567103110, 2037234043, 3134206220, 4074468086, 6268412440, 8148936172, 10186170215, 16297872344, 20372340430, 40744680860, 81489361720]

約数ペア:

[(1, 81489361720), (2, 40744680860), (4, 20372340430), (5, 16297872344), (8, 10186170215), (10, 8148936172), (13, 6268412440), (20, 4074468086), (26, 3134206220), (40, 2037234043), (52, 1567103110), (65, 1253682488), (104, 783551555), (130, 626841244), (199, 409494280), (260, 313420622), (398, 204747140), (520, 156710311), (796, 102373570), (995, 81898856), (1592, 51186785), (1990, 40949428), (2587, 31499560), (3980, 20474714), (5174, 15749780), (7960, 10237357), (10348, 7874890), (12935, 6299912), (20696, 3937445), (25870, 3149956), (51740, 1574978), (103480, 787489)]