81669420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64817}}^1$

素因数の和:64839

約数の個数: 72

約数和(自身を含む): 283125024

約数和(自身を除く): 201455604

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64817, 129634, 194451, 259268, 324085, 388902, 453719, 583353, 648170, 777804, 907438, 972255, 1166706, 1296340, 1361157, 1814876, 1944510, 2268595, 2333412, 2722314, 2916765, 3889020, 4083471, 4537190, 5444628, 5833530, 6805785, 8166942, 9074380, 11667060, 13611570, 16333884, 20417355, 27223140, 40834710, 81669420]

約数ペア:

[(1, 81669420), (2, 40834710), (3, 27223140), (4, 20417355), (5, 16333884), (6, 13611570), (7, 11667060), (9, 9074380), (10, 8166942), (12, 6805785), (14, 5833530), (15, 5444628), (18, 4537190), (20, 4083471), (21, 3889020), (28, 2916765), (30, 2722314), (35, 2333412), (36, 2268595), (42, 1944510), (45, 1814876), (60, 1361157), (63, 1296340), (70, 1166706), (84, 972255), (90, 907438), (105, 777804), (126, 648170), (140, 583353), (180, 453719), (210, 388902), (252, 324085), (315, 259268), (420, 194451), (630, 129634), (1260, 64817)]