20178690

素因数分解:

$2^1\times 3^1\times 5^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:121

約数の個数: 128

約数和(自身を含む): 59097600

約数和(自身を除く): 38918910

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 37, 42, 49, 53, 70, 74, 98, 105, 106, 111, 147, 159, 185, 210, 222, 245, 259, 265, 294, 318, 343, 370, 371, 490, 518, 530, 555, 686, 735, 742, 777, 795, 1029, 1110, 1113, 1295, 1470, 1554, 1590, 1715, 1813, 1855, 1961, 2058, 2226, 2590, 2597, 3430, 3626, 3710, 3885, 3922, 5145, 5194, 5439, 5565, 5883, 7770, 7791, 9065, 9805, 10290, 10878, 11130, 11766, 12691, 12985, 13727, 15582, 18130, 18179, 19610, 25382, 25970, 27195, 27454, 29415, 36358, 38073, 38955, 41181, 54390, 54537, 58830, 63455, 68635, 76146, 77910, 82362, 90895, 96089, 109074, 126910, 137270, 181790, 190365, 192178, 205905, 272685, 288267, 380730, 411810, 480445, 545370, 576534, 672623, 960890, 1345246, 1441335, 2017869, 2882670, 3363115, 4035738, 6726230, 10089345, 20178690]

約数ペア:

[(1, 20178690), (2, 10089345), (3, 6726230), (5, 4035738), (6, 3363115), (7, 2882670), (10, 2017869), (14, 1441335), (15, 1345246), (21, 960890), (30, 672623), (35, 576534), (37, 545370), (42, 480445), (49, 411810), (53, 380730), (70, 288267), (74, 272685), (98, 205905), (105, 192178), (106, 190365), (111, 181790), (147, 137270), (159, 126910), (185, 109074), (210, 96089), (222, 90895), (245, 82362), (259, 77910), (265, 76146), (294, 68635), (318, 63455), (343, 58830), (370, 54537), (371, 54390), (490, 41181), (518, 38955), (530, 38073), (555, 36358), (686, 29415), (735, 27454), (742, 27195), (777, 25970), (795, 25382), (1029, 19610), (1110, 18179), (1113, 18130), (1295, 15582), (1470, 13727), (1554, 12985), (1590, 12691), (1715, 11766), (1813, 11130), (1855, 10878), (1961, 10290), (2058, 9805), (2226, 9065), (2590, 7791), (2597, 7770), (3430, 5883), (3626, 5565), (3710, 5439), (3885, 5194), (3922, 5145)]