19538460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 64864800

約数和(自身を除く): 45326340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 29, 30, 36, 38, 45, 57, 58, 60, 76, 87, 90, 95, 114, 116, 145, 171, 174, 180, 190, 197, 228, 261, 285, 290, 342, 348, 380, 394, 435, 522, 551, 570, 580, 591, 684, 788, 855, 870, 985, 1044, 1102, 1140, 1182, 1305, 1653, 1710, 1740, 1773, 1970, 2204, 2364, 2610, 2755, 2955, 3306, 3420, 3546, 3743, 3940, 4959, 5220, 5510, 5713, 5910, 6612, 7092, 7486, 8265, 8865, 9918, 11020, 11229, 11426, 11820, 14972, 16530, 17139, 17730, 18715, 19836, 22458, 22852, 24795, 28565, 33060, 33687, 34278, 35460, 37430, 44916, 49590, 51417, 56145, 57130, 67374, 68556, 74860, 85695, 99180, 102834, 108547, 112290, 114260, 134748, 168435, 171390, 205668, 217094, 224580, 257085, 325641, 336870, 342780, 434188, 514170, 542735, 651282, 673740, 976923, 1028340, 1085470, 1302564, 1628205, 1953846, 2170940, 3256410, 3907692, 4884615, 6512820, 9769230, 19538460]

約数ペア:

[(1, 19538460), (2, 9769230), (3, 6512820), (4, 4884615), (5, 3907692), (6, 3256410), (9, 2170940), (10, 1953846), (12, 1628205), (15, 1302564), (18, 1085470), (19, 1028340), (20, 976923), (29, 673740), (30, 651282), (36, 542735), (38, 514170), (45, 434188), (57, 342780), (58, 336870), (60, 325641), (76, 257085), (87, 224580), (90, 217094), (95, 205668), (114, 171390), (116, 168435), (145, 134748), (171, 114260), (174, 112290), (180, 108547), (190, 102834), (197, 99180), (228, 85695), (261, 74860), (285, 68556), (290, 67374), (342, 57130), (348, 56145), (380, 51417), (394, 49590), (435, 44916), (522, 37430), (551, 35460), (570, 34278), (580, 33687), (591, 33060), (684, 28565), (788, 24795), (855, 22852), (870, 22458), (985, 19836), (1044, 18715), (1102, 17730), (1140, 17139), (1182, 16530), (1305, 14972), (1653, 11820), (1710, 11426), (1740, 11229), (1773, 11020), (1970, 9918), (2204, 8865), (2364, 8265), (2610, 7486), (2755, 7092), (2955, 6612), (3306, 5910), (3420, 5713), (3546, 5510), (3743, 5220), (3940, 4959)]