21494700

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:461

約数の個数: 144

約数和(自身を含む): 72912000

約数和(自身を除く): 51417300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 25, 27, 30, 36, 38, 45, 50, 54, 57, 60, 75, 76, 90, 95, 100, 108, 114, 135, 150, 171, 180, 190, 225, 228, 270, 285, 300, 342, 380, 419, 450, 475, 513, 540, 570, 675, 684, 838, 855, 900, 950, 1026, 1140, 1257, 1350, 1425, 1676, 1710, 1900, 2052, 2095, 2514, 2565, 2700, 2850, 3420, 3771, 4190, 4275, 5028, 5130, 5700, 6285, 7542, 7961, 8380, 8550, 10260, 10475, 11313, 12570, 12825, 15084, 15922, 17100, 18855, 20950, 22626, 23883, 25140, 25650, 31425, 31844, 37710, 39805, 41900, 45252, 47766, 51300, 56565, 62850, 71649, 75420, 79610, 94275, 95532, 113130, 119415, 125700, 143298, 159220, 188550, 199025, 214947, 226260, 238830, 282825, 286596, 358245, 377100, 398050, 429894, 477660, 565650, 597075, 716490, 796100, 859788, 1074735, 1131300, 1194150, 1432980, 1791225, 2149470, 2388300, 3582450, 4298940, 5373675, 7164900, 10747350, 21494700]

約数ペア:

[(1, 21494700), (2, 10747350), (3, 7164900), (4, 5373675), (5, 4298940), (6, 3582450), (9, 2388300), (10, 2149470), (12, 1791225), (15, 1432980), (18, 1194150), (19, 1131300), (20, 1074735), (25, 859788), (27, 796100), (30, 716490), (36, 597075), (38, 565650), (45, 477660), (50, 429894), (54, 398050), (57, 377100), (60, 358245), (75, 286596), (76, 282825), (90, 238830), (95, 226260), (100, 214947), (108, 199025), (114, 188550), (135, 159220), (150, 143298), (171, 125700), (180, 119415), (190, 113130), (225, 95532), (228, 94275), (270, 79610), (285, 75420), (300, 71649), (342, 62850), (380, 56565), (419, 51300), (450, 47766), (475, 45252), (513, 41900), (540, 39805), (570, 37710), (675, 31844), (684, 31425), (838, 25650), (855, 25140), (900, 23883), (950, 22626), (1026, 20950), (1140, 18855), (1257, 17100), (1350, 15922), (1425, 15084), (1676, 12825), (1710, 12570), (1900, 11313), (2052, 10475), (2095, 10260), (2514, 8550), (2565, 8380), (2700, 7961), (2850, 7542), (3420, 6285), (3771, 5700), (4190, 5130), (4275, 5028)]