18231906

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 128

約数和(自身を含む): 50135040

約数和(自身を除く): 31903134

約数列:

[1, 2, 3, 6, 7, 11, 14, 19, 21, 22, 31, 33, 38, 42, 57, 62, 66, 67, 77, 93, 114, 133, 134, 154, 186, 201, 209, 217, 231, 266, 341, 399, 402, 418, 434, 462, 469, 589, 627, 651, 682, 737, 798, 938, 1023, 1178, 1254, 1273, 1302, 1407, 1463, 1474, 1767, 2046, 2077, 2211, 2387, 2546, 2814, 2926, 3534, 3819, 4123, 4154, 4389, 4422, 4774, 5159, 6231, 6479, 7161, 7638, 8246, 8778, 8911, 10318, 12369, 12462, 12958, 14003, 14322, 14539, 15477, 17822, 19437, 22847, 24738, 26733, 28006, 29078, 30954, 38874, 39463, 42009, 43617, 45353, 45694, 53466, 68541, 78926, 84018, 87234, 90706, 98021, 118389, 136059, 137082, 159929, 196042, 236778, 272118, 276241, 294063, 319858, 434093, 479787, 552482, 588126, 828723, 868186, 959574, 1302279, 1657446, 2604558, 3038651, 6077302, 9115953, 18231906]

約数ペア:

[(1, 18231906), (2, 9115953), (3, 6077302), (6, 3038651), (7, 2604558), (11, 1657446), (14, 1302279), (19, 959574), (21, 868186), (22, 828723), (31, 588126), (33, 552482), (38, 479787), (42, 434093), (57, 319858), (62, 294063), (66, 276241), (67, 272118), (77, 236778), (93, 196042), (114, 159929), (133, 137082), (134, 136059), (154, 118389), (186, 98021), (201, 90706), (209, 87234), (217, 84018), (231, 78926), (266, 68541), (341, 53466), (399, 45694), (402, 45353), (418, 43617), (434, 42009), (462, 39463), (469, 38874), (589, 30954), (627, 29078), (651, 28006), (682, 26733), (737, 24738), (798, 22847), (938, 19437), (1023, 17822), (1178, 15477), (1254, 14539), (1273, 14322), (1302, 14003), (1407, 12958), (1463, 12462), (1474, 12369), (1767, 10318), (2046, 8911), (2077, 8778), (2211, 8246), (2387, 7638), (2546, 7161), (2814, 6479), (2926, 6231), (3534, 5159), (3819, 4774), (4123, 4422), (4154, 4389)]