201244520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:678

約数の個数: 64

約数和(自身を含む): 462488400

約数和(自身を除く): 261243880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 109, 202, 218, 404, 436, 457, 505, 545, 808, 872, 914, 1010, 1090, 1828, 2020, 2180, 2285, 3656, 4040, 4360, 4570, 9140, 11009, 18280, 22018, 44036, 46157, 49813, 55045, 88072, 92314, 99626, 110090, 184628, 199252, 220180, 230785, 249065, 369256, 398504, 440360, 461570, 498130, 923140, 996260, 1846280, 1992520, 5031113, 10062226, 20124452, 25155565, 40248904, 50311130, 100622260, 201244520]

約数ペア:

[(1, 201244520), (2, 100622260), (4, 50311130), (5, 40248904), (8, 25155565), (10, 20124452), (20, 10062226), (40, 5031113), (101, 1992520), (109, 1846280), (202, 996260), (218, 923140), (404, 498130), (436, 461570), (457, 440360), (505, 398504), (545, 369256), (808, 249065), (872, 230785), (914, 220180), (1010, 199252), (1090, 184628), (1828, 110090), (2020, 99626), (2180, 92314), (2285, 88072), (3656, 55045), (4040, 49813), (4360, 46157), (4570, 44036), (9140, 22018), (11009, 18280)]