18969170

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:347

約数の個数: 48

約数和(自身を含む): 38294424

約数和(自身を除く): 19325254

約数列:

[1, 2, 5, 10, 11, 22, 55, 61, 110, 121, 122, 242, 257, 305, 514, 605, 610, 671, 1210, 1285, 1342, 2570, 2827, 3355, 5654, 6710, 7381, 14135, 14762, 15677, 28270, 31097, 31354, 36905, 62194, 73810, 78385, 155485, 156770, 172447, 310970, 344894, 862235, 1724470, 1896917, 3793834, 9484585, 18969170]

約数ペア:

[(1, 18969170), (2, 9484585), (5, 3793834), (10, 1896917), (11, 1724470), (22, 862235), (55, 344894), (61, 310970), (110, 172447), (121, 156770), (122, 155485), (242, 78385), (257, 73810), (305, 62194), (514, 36905), (605, 31354), (610, 31097), (671, 28270), (1210, 15677), (1285, 14762), (1342, 14135), (2570, 7381), (2827, 6710), (3355, 5654)]