19354540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{53}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 45042480

約数和(自身を除く): 25687940

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 53, 62, 76, 95, 106, 124, 155, 190, 212, 265, 310, 380, 530, 589, 620, 961, 1007, 1060, 1178, 1643, 1922, 2014, 2356, 2945, 3286, 3844, 4028, 4805, 5035, 5890, 6572, 8215, 9610, 10070, 11780, 16430, 18259, 19220, 20140, 31217, 32860, 36518, 50933, 62434, 73036, 91295, 101866, 124868, 156085, 182590, 203732, 254665, 312170, 365180, 509330, 624340, 967727, 1018660, 1935454, 3870908, 4838635, 9677270, 19354540]

約数ペア:

[(1, 19354540), (2, 9677270), (4, 4838635), (5, 3870908), (10, 1935454), (19, 1018660), (20, 967727), (31, 624340), (38, 509330), (53, 365180), (62, 312170), (76, 254665), (95, 203732), (106, 182590), (124, 156085), (155, 124868), (190, 101866), (212, 91295), (265, 73036), (310, 62434), (380, 50933), (530, 36518), (589, 32860), (620, 31217), (961, 20140), (1007, 19220), (1060, 18259), (1178, 16430), (1643, 11780), (1922, 10070), (2014, 9610), (2356, 8215), (2945, 6572), (3286, 5890), (3844, 5035), (4028, 4805)]