20019520

素因数分解:

$2^6\times 5^1\times {\mathrm{73}}^1\times {\mathrm{857}}^1$

素因数の和:947

約数の個数: 56

約数和(自身を含む): 48380904

約数和(自身を除く): 28361384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 146, 160, 292, 320, 365, 584, 730, 857, 1168, 1460, 1714, 2336, 2920, 3428, 4285, 4672, 5840, 6856, 8570, 11680, 13712, 17140, 23360, 27424, 34280, 54848, 62561, 68560, 125122, 137120, 250244, 274240, 312805, 500488, 625610, 1000976, 1251220, 2001952, 2502440, 4003904, 5004880, 10009760, 20019520]

約数ペア:

[(1, 20019520), (2, 10009760), (4, 5004880), (5, 4003904), (8, 2502440), (10, 2001952), (16, 1251220), (20, 1000976), (32, 625610), (40, 500488), (64, 312805), (73, 274240), (80, 250244), (146, 137120), (160, 125122), (292, 68560), (320, 62561), (365, 54848), (584, 34280), (730, 27424), (857, 23360), (1168, 17140), (1460, 13712), (1714, 11680), (2336, 8570), (2920, 6856), (3428, 5840), (4285, 4672)]