19161340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{347}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 44198784

約数和(自身を除く): 25037444

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 251, 347, 502, 694, 1004, 1255, 1388, 1735, 2510, 2761, 3470, 3817, 5020, 5522, 6940, 7634, 11044, 13805, 15268, 19085, 27610, 38170, 55220, 76340, 87097, 174194, 348388, 435485, 870970, 958067, 1741940, 1916134, 3832268, 4790335, 9580670, 19161340]

約数ペア:

[(1, 19161340), (2, 9580670), (4, 4790335), (5, 3832268), (10, 1916134), (11, 1741940), (20, 958067), (22, 870970), (44, 435485), (55, 348388), (110, 174194), (220, 87097), (251, 76340), (347, 55220), (502, 38170), (694, 27610), (1004, 19085), (1255, 15268), (1388, 13805), (1735, 11044), (2510, 7634), (2761, 6940), (3470, 5522), (3817, 5020)]