18980150

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:214

約数の個数: 72

約数和(自身を含む): 42068736

約数和(自身を除く): 23088586

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 61, 70, 98, 122, 127, 175, 245, 254, 305, 350, 427, 490, 610, 635, 854, 889, 1225, 1270, 1525, 1778, 2135, 2450, 2989, 3050, 3175, 4270, 4445, 5978, 6223, 6350, 7747, 8890, 10675, 12446, 14945, 15494, 21350, 22225, 29890, 31115, 38735, 44450, 54229, 62230, 74725, 77470, 108458, 149450, 155575, 193675, 271145, 311150, 379603, 387350, 542290, 759206, 1355725, 1898015, 2711450, 3796030, 9490075, 18980150]

約数ペア:

[(1, 18980150), (2, 9490075), (5, 3796030), (7, 2711450), (10, 1898015), (14, 1355725), (25, 759206), (35, 542290), (49, 387350), (50, 379603), (61, 311150), (70, 271145), (98, 193675), (122, 155575), (127, 149450), (175, 108458), (245, 77470), (254, 74725), (305, 62230), (350, 54229), (427, 44450), (490, 38735), (610, 31115), (635, 29890), (854, 22225), (889, 21350), (1225, 15494), (1270, 14945), (1525, 12446), (1778, 10675), (2135, 8890), (2450, 7747), (2989, 6350), (3050, 6223), (3175, 5978), (4270, 4445)]