18012280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:149

約数の個数: 128

約数和(自身を含む): 49351680

約数和(自身を除く): 31339400

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 47, 52, 55, 65, 67, 88, 94, 104, 110, 130, 134, 143, 188, 220, 235, 260, 268, 286, 335, 376, 440, 470, 517, 520, 536, 572, 611, 670, 715, 737, 871, 940, 1034, 1144, 1222, 1340, 1430, 1474, 1742, 1880, 2068, 2444, 2585, 2680, 2860, 2948, 3055, 3149, 3484, 3685, 4136, 4355, 4888, 5170, 5720, 5896, 6110, 6298, 6721, 6968, 7370, 8710, 9581, 10340, 12220, 12596, 13442, 14740, 15745, 17420, 19162, 20680, 24440, 25192, 26884, 29480, 31490, 33605, 34639, 34840, 38324, 40937, 47905, 53768, 62980, 67210, 69278, 76648, 81874, 95810, 125960, 134420, 138556, 163748, 173195, 191620, 204685, 268840, 277112, 327496, 346390, 383240, 409370, 450307, 692780, 818740, 900614, 1385560, 1637480, 1801228, 2251535, 3602456, 4503070, 9006140, 18012280]

約数ペア:

[(1, 18012280), (2, 9006140), (4, 4503070), (5, 3602456), (8, 2251535), (10, 1801228), (11, 1637480), (13, 1385560), (20, 900614), (22, 818740), (26, 692780), (40, 450307), (44, 409370), (47, 383240), (52, 346390), (55, 327496), (65, 277112), (67, 268840), (88, 204685), (94, 191620), (104, 173195), (110, 163748), (130, 138556), (134, 134420), (143, 125960), (188, 95810), (220, 81874), (235, 76648), (260, 69278), (268, 67210), (286, 62980), (335, 53768), (376, 47905), (440, 40937), (470, 38324), (517, 34840), (520, 34639), (536, 33605), (572, 31490), (611, 29480), (670, 26884), (715, 25192), (737, 24440), (871, 20680), (940, 19162), (1034, 17420), (1144, 15745), (1222, 14740), (1340, 13442), (1430, 12596), (1474, 12220), (1742, 10340), (1880, 9581), (2068, 8710), (2444, 7370), (2585, 6968), (2680, 6721), (2860, 6298), (2948, 6110), (3055, 5896), (3149, 5720), (3484, 5170), (3685, 4888), (4136, 4355)]