81685680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20021}}^1$

素因数の和:20054

約数の個数: 80

約数和(自身を含む): 268134624

約数和(自身を除く): 186448944

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 20021, 40042, 60063, 80084, 100105, 120126, 160168, 200210, 240252, 300315, 320336, 340357, 400420, 480504, 600630, 680714, 800840, 961008, 1021071, 1201260, 1361428, 1601680, 1701785, 2042142, 2402520, 2722856, 3403570, 4084284, 4805040, 5105355, 5445712, 6807140, 8168568, 10210710, 13614280, 16337136, 20421420, 27228560, 40842840, 81685680]

約数ペア:

[(1, 81685680), (2, 40842840), (3, 27228560), (4, 20421420), (5, 16337136), (6, 13614280), (8, 10210710), (10, 8168568), (12, 6807140), (15, 5445712), (16, 5105355), (17, 4805040), (20, 4084284), (24, 3403570), (30, 2722856), (34, 2402520), (40, 2042142), (48, 1701785), (51, 1601680), (60, 1361428), (68, 1201260), (80, 1021071), (85, 961008), (102, 800840), (120, 680714), (136, 600630), (170, 480504), (204, 400420), (240, 340357), (255, 320336), (272, 300315), (340, 240252), (408, 200210), (510, 160168), (680, 120126), (816, 100105), (1020, 80084), (1360, 60063), (2040, 40042), (4080, 20021)]