20408889618

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{1931}}^1$

素因数の和:2061

約数の個数: 144

約数和(自身を含む): 50279419008

約数和(自身を除く): 29870529390

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 47, 62, 78, 93, 94, 117, 141, 186, 234, 279, 282, 403, 423, 558, 611, 806, 846, 961, 1209, 1222, 1457, 1833, 1922, 1931, 2418, 2883, 2914, 3627, 3666, 3862, 4371, 5499, 5766, 5793, 7254, 8649, 8742, 10998, 11586, 12493, 13113, 17298, 17379, 18941, 24986, 25103, 26226, 34758, 37479, 37882, 45167, 50206, 56823, 59861, 74958, 75309, 90334, 90757, 112437, 113646, 119722, 135501, 150618, 170469, 179583, 181514, 224874, 225927, 271002, 272271, 340938, 359166, 406503, 451854, 538749, 544542, 587171, 778193, 813006, 816813, 1077498, 1174342, 1179841, 1556386, 1633626, 1761513, 1855691, 2334579, 2359682, 2813467, 3523026, 3539523, 3711382, 4669158, 5284539, 5567073, 5626934, 7003737, 7079046, 8440401, 10569078, 10618569, 11134146, 14007474, 16701219, 16880802, 21237138, 24123983, 25321203, 33402438, 36575071, 48247966, 50642406, 72371949, 73150142, 87217477, 109725213, 144743898, 174434954, 217115847, 219450426, 261652431, 329175639, 434231694, 523304862, 658351278, 784957293, 1133827201, 1569914586, 2267654402, 3401481603, 6802963206, 10204444809, 20408889618]

約数ペア:

[(1, 20408889618), (2, 10204444809), (3, 6802963206), (6, 3401481603), (9, 2267654402), (13, 1569914586), (18, 1133827201), (26, 784957293), (31, 658351278), (39, 523304862), (47, 434231694), (62, 329175639), (78, 261652431), (93, 219450426), (94, 217115847), (117, 174434954), (141, 144743898), (186, 109725213), (234, 87217477), (279, 73150142), (282, 72371949), (403, 50642406), (423, 48247966), (558, 36575071), (611, 33402438), (806, 25321203), (846, 24123983), (961, 21237138), (1209, 16880802), (1222, 16701219), (1457, 14007474), (1833, 11134146), (1922, 10618569), (1931, 10569078), (2418, 8440401), (2883, 7079046), (2914, 7003737), (3627, 5626934), (3666, 5567073), (3862, 5284539), (4371, 4669158), (5499, 3711382), (5766, 3539523), (5793, 3523026), (7254, 2813467), (8649, 2359682), (8742, 2334579), (10998, 1855691), (11586, 1761513), (12493, 1633626), (13113, 1556386), (17298, 1179841), (17379, 1174342), (18941, 1077498), (24986, 816813), (25103, 813006), (26226, 778193), (34758, 587171), (37479, 544542), (37882, 538749), (45167, 451854), (50206, 406503), (56823, 359166), (59861, 340938), (74958, 272271), (75309, 271002), (90334, 225927), (90757, 224874), (112437, 181514), (113646, 179583), (119722, 170469), (135501, 150618)]