171917240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{390721}}^1$

素因数の和:390743

約数の個数: 32

約数和(自身を含む): 421979760

約数和(自身を除く): 250062520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 390721, 781442, 1562884, 1953605, 3125768, 3907210, 4297931, 7814420, 8595862, 15628840, 17191724, 21489655, 34383448, 42979310, 85958620, 171917240]

約数ペア:

[(1, 171917240), (2, 85958620), (4, 42979310), (5, 34383448), (8, 21489655), (10, 17191724), (11, 15628840), (20, 8595862), (22, 7814420), (40, 4297931), (44, 3907210), (55, 3125768), (88, 1953605), (110, 1562884), (220, 781442), (440, 390721)]