18908820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:414

約数の個数: 144

約数和(自身を含む): 67267200

約数和(自身を除く): 48358380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 43, 45, 60, 63, 70, 84, 86, 90, 105, 126, 129, 140, 172, 180, 210, 215, 252, 258, 301, 315, 349, 387, 420, 430, 516, 602, 630, 645, 698, 774, 860, 903, 1047, 1204, 1260, 1290, 1396, 1505, 1548, 1745, 1806, 1935, 2094, 2443, 2580, 2709, 3010, 3141, 3490, 3612, 3870, 4188, 4515, 4886, 5235, 5418, 6020, 6282, 6980, 7329, 7740, 9030, 9772, 10470, 10836, 12215, 12564, 13545, 14658, 15007, 15705, 18060, 20940, 21987, 24430, 27090, 29316, 30014, 31410, 36645, 43974, 45021, 48860, 54180, 60028, 62820, 73290, 75035, 87948, 90042, 105049, 109935, 135063, 146580, 150070, 180084, 210098, 219870, 225105, 270126, 300140, 315147, 420196, 439740, 450210, 525245, 540252, 630294, 675315, 900420, 945441, 1050490, 1260588, 1350630, 1575735, 1890882, 2100980, 2701260, 3151470, 3781764, 4727205, 6302940, 9454410, 18908820]

約数ペア:

[(1, 18908820), (2, 9454410), (3, 6302940), (4, 4727205), (5, 3781764), (6, 3151470), (7, 2701260), (9, 2100980), (10, 1890882), (12, 1575735), (14, 1350630), (15, 1260588), (18, 1050490), (20, 945441), (21, 900420), (28, 675315), (30, 630294), (35, 540252), (36, 525245), (42, 450210), (43, 439740), (45, 420196), (60, 315147), (63, 300140), (70, 270126), (84, 225105), (86, 219870), (90, 210098), (105, 180084), (126, 150070), (129, 146580), (140, 135063), (172, 109935), (180, 105049), (210, 90042), (215, 87948), (252, 75035), (258, 73290), (301, 62820), (315, 60028), (349, 54180), (387, 48860), (420, 45021), (430, 43974), (516, 36645), (602, 31410), (630, 30014), (645, 29316), (698, 27090), (774, 24430), (860, 21987), (903, 20940), (1047, 18060), (1204, 15705), (1260, 15007), (1290, 14658), (1396, 13545), (1505, 12564), (1548, 12215), (1745, 10836), (1806, 10470), (1935, 9772), (2094, 9030), (2443, 7740), (2580, 7329), (2709, 6980), (3010, 6282), (3141, 6020), (3490, 5418), (3612, 5235), (3870, 4886), (4188, 4515)]