1990267440

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{1184683}}^1$

素因数の和:1184706

約数の個数: 80

約数和(自身を含む): 7051239168

約数和(自身を除く): 5060971728

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 1184683, 2369366, 3554049, 4738732, 5923415, 7108098, 8292781, 9477464, 11846830, 14216196, 16585562, 17770245, 18954928, 23693660, 24878343, 28432392, 33171124, 35540490, 41463905, 47387320, 49756686, 56864784, 66342248, 71080980, 82927810, 94774640, 99513372, 124391715, 132684496, 142161960, 165855620, 199026744, 248783430, 284323920, 331711240, 398053488, 497566860, 663422480, 995133720, 1990267440]

約数ペア:

[(1, 1990267440), (2, 995133720), (3, 663422480), (4, 497566860), (5, 398053488), (6, 331711240), (7, 284323920), (8, 248783430), (10, 199026744), (12, 165855620), (14, 142161960), (15, 132684496), (16, 124391715), (20, 99513372), (21, 94774640), (24, 82927810), (28, 71080980), (30, 66342248), (35, 56864784), (40, 49756686), (42, 47387320), (48, 41463905), (56, 35540490), (60, 33171124), (70, 28432392), (80, 24878343), (84, 23693660), (105, 18954928), (112, 17770245), (120, 16585562), (140, 14216196), (168, 11846830), (210, 9477464), (240, 8292781), (280, 7108098), (336, 5923415), (420, 4738732), (560, 3554049), (840, 2369366), (1680, 1184683)]