19989178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 38102400

約数和(自身を除く): 18113222

約数列:

[1, 2, 11, 17, 19, 22, 29, 34, 38, 58, 97, 187, 194, 209, 319, 323, 374, 418, 493, 551, 638, 646, 986, 1067, 1102, 1649, 1843, 2134, 2813, 3298, 3553, 3686, 5423, 5626, 6061, 7106, 9367, 10846, 12122, 18139, 18734, 20273, 30943, 31331, 36278, 40546, 47821, 53447, 61886, 62662, 95642, 103037, 106894, 206074, 344641, 526031, 587917, 689282, 908599, 1052062, 1175834, 1817198, 9994589, 19989178]

約数ペア:

[(1, 19989178), (2, 9994589), (11, 1817198), (17, 1175834), (19, 1052062), (22, 908599), (29, 689282), (34, 587917), (38, 526031), (58, 344641), (97, 206074), (187, 106894), (194, 103037), (209, 95642), (319, 62662), (323, 61886), (374, 53447), (418, 47821), (493, 40546), (551, 36278), (638, 31331), (646, 30943), (986, 20273), (1067, 18734), (1102, 18139), (1649, 12122), (1843, 10846), (2134, 9367), (2813, 7106), (3298, 6061), (3553, 5626), (3686, 5423)]