18158889

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:741

約数の個数: 32

約数和(自身を含む): 29583360

約数和(自身を除く): 11424471

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 641, 1349, 1491, 1923, 4047, 4487, 9443, 12179, 13461, 28329, 36537, 45511, 85253, 136533, 255759, 318577, 864709, 955731, 2594127, 6052963, 18158889]

約数ペア:

[(1, 18158889), (3, 6052963), (7, 2594127), (19, 955731), (21, 864709), (57, 318577), (71, 255759), (133, 136533), (213, 85253), (399, 45511), (497, 36537), (641, 28329), (1349, 13461), (1491, 12179), (1923, 9443), (4047, 4487)]