91218440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{55621}}^1$

素因数の和:55673

約数の個数: 32

約数和(自身を含む): 210251160

約数和(自身を除く): 119032720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 55621, 111242, 222484, 278105, 444968, 556210, 1112420, 2224840, 2280461, 4560922, 9121844, 11402305, 18243688, 22804610, 45609220, 91218440]

約数ペア:

[(1, 91218440), (2, 45609220), (4, 22804610), (5, 18243688), (8, 11402305), (10, 9121844), (20, 4560922), (40, 2280461), (41, 2224840), (82, 1112420), (164, 556210), (205, 444968), (328, 278105), (410, 222484), (820, 111242), (1640, 55621)]