21249470

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:305

約数の個数: 64

約数和(自身を含む): 44914176

約数和(自身を除く): 23664706

約数列:

[1, 2, 5, 10, 11, 22, 23, 37, 46, 55, 74, 110, 115, 185, 227, 230, 253, 370, 407, 454, 506, 814, 851, 1135, 1265, 1702, 2035, 2270, 2497, 2530, 4070, 4255, 4994, 5221, 8399, 8510, 9361, 10442, 12485, 16798, 18722, 24970, 26105, 41995, 46805, 52210, 57431, 83990, 92389, 93610, 114862, 184778, 193177, 287155, 386354, 461945, 574310, 923890, 965885, 1931770, 2124947, 4249894, 10624735, 21249470]

約数ペア:

[(1, 21249470), (2, 10624735), (5, 4249894), (10, 2124947), (11, 1931770), (22, 965885), (23, 923890), (37, 574310), (46, 461945), (55, 386354), (74, 287155), (110, 193177), (115, 184778), (185, 114862), (227, 93610), (230, 92389), (253, 83990), (370, 57431), (407, 52210), (454, 46805), (506, 41995), (814, 26105), (851, 24970), (1135, 18722), (1265, 16798), (1702, 12485), (2035, 10442), (2270, 9361), (2497, 8510), (2530, 8399), (4070, 5221), (4255, 4994)]