20899520

素因数分解:

$2^6\times 5^1\times {\mathrm{241}}^1\times {\mathrm{271}}^1$

素因数の和:529

約数の個数: 56

約数和(自身を含む): 50157888

約数和(自身を除く): 29258368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 241, 271, 320, 482, 542, 964, 1084, 1205, 1355, 1928, 2168, 2410, 2710, 3856, 4336, 4820, 5420, 7712, 8672, 9640, 10840, 15424, 17344, 19280, 21680, 38560, 43360, 65311, 77120, 86720, 130622, 261244, 326555, 522488, 653110, 1044976, 1306220, 2089952, 2612440, 4179904, 5224880, 10449760, 20899520]

約数ペア:

[(1, 20899520), (2, 10449760), (4, 5224880), (5, 4179904), (8, 2612440), (10, 2089952), (16, 1306220), (20, 1044976), (32, 653110), (40, 522488), (64, 326555), (80, 261244), (160, 130622), (241, 86720), (271, 77120), (320, 65311), (482, 43360), (542, 38560), (964, 21680), (1084, 19280), (1205, 17344), (1355, 15424), (1928, 10840), (2168, 9640), (2410, 8672), (2710, 7712), (3856, 5420), (4336, 4820)]