18158940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1277}}^1$

素因数の和:1371

約数の個数: 72

約数和(自身を含む): 55823040

約数和(自身を除く): 37664100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1277, 1422, 1580, 2370, 2554, 2844, 3555, 3831, 4740, 5108, 6385, 7110, 7662, 11493, 12770, 14220, 15324, 19155, 22986, 25540, 38310, 45972, 57465, 76620, 100883, 114930, 201766, 229860, 302649, 403532, 504415, 605298, 907947, 1008830, 1210596, 1513245, 1815894, 2017660, 3026490, 3631788, 4539735, 6052980, 9079470, 18158940]

約数ペア:

[(1, 18158940), (2, 9079470), (3, 6052980), (4, 4539735), (5, 3631788), (6, 3026490), (9, 2017660), (10, 1815894), (12, 1513245), (15, 1210596), (18, 1008830), (20, 907947), (30, 605298), (36, 504415), (45, 403532), (60, 302649), (79, 229860), (90, 201766), (158, 114930), (180, 100883), (237, 76620), (316, 57465), (395, 45972), (474, 38310), (711, 25540), (790, 22986), (948, 19155), (1185, 15324), (1277, 14220), (1422, 12770), (1580, 11493), (2370, 7662), (2554, 7110), (2844, 6385), (3555, 5108), (3831, 4740)]