400680

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{53}}^1$

素因数の和:80

約数の個数: 128

約数和(自身を含む): 1555200

約数和(自身を除く): 1154520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 53, 54, 56, 60, 63, 70, 72, 84, 90, 105, 106, 108, 120, 126, 135, 140, 159, 168, 180, 189, 210, 212, 216, 252, 265, 270, 280, 315, 318, 360, 371, 378, 420, 424, 477, 504, 530, 540, 630, 636, 742, 756, 795, 840, 945, 954, 1060, 1080, 1113, 1260, 1272, 1431, 1484, 1512, 1590, 1855, 1890, 1908, 2120, 2226, 2385, 2520, 2862, 2968, 3180, 3339, 3710, 3780, 3816, 4452, 4770, 5565, 5724, 6360, 6678, 7155, 7420, 7560, 8904, 9540, 10017, 11130, 11448, 13356, 14310, 14840, 16695, 19080, 20034, 22260, 26712, 28620, 33390, 40068, 44520, 50085, 57240, 66780, 80136, 100170, 133560, 200340, 400680]

約数ペア:

[(1, 400680), (2, 200340), (3, 133560), (4, 100170), (5, 80136), (6, 66780), (7, 57240), (8, 50085), (9, 44520), (10, 40068), (12, 33390), (14, 28620), (15, 26712), (18, 22260), (20, 20034), (21, 19080), (24, 16695), (27, 14840), (28, 14310), (30, 13356), (35, 11448), (36, 11130), (40, 10017), (42, 9540), (45, 8904), (53, 7560), (54, 7420), (56, 7155), (60, 6678), (63, 6360), (70, 5724), (72, 5565), (84, 4770), (90, 4452), (105, 3816), (106, 3780), (108, 3710), (120, 3339), (126, 3180), (135, 2968), (140, 2862), (159, 2520), (168, 2385), (180, 2226), (189, 2120), (210, 1908), (212, 1890), (216, 1855), (252, 1590), (265, 1512), (270, 1484), (280, 1431), (315, 1272), (318, 1260), (360, 1113), (371, 1080), (378, 1060), (420, 954), (424, 945), (477, 840), (504, 795), (530, 756), (540, 742), (630, 636)]