21398940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6257}}^1$

素因数の和:6291

約数の個数: 72

約数和(自身を含む): 68337360

約数和(自身を除く): 46938420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 6257, 12514, 18771, 25028, 31285, 37542, 56313, 62570, 75084, 93855, 112626, 118883, 125140, 187710, 225252, 237766, 281565, 356649, 375420, 475532, 563130, 594415, 713298, 1069947, 1126260, 1188830, 1426596, 1783245, 2139894, 2377660, 3566490, 4279788, 5349735, 7132980, 10699470, 21398940]

約数ペア:

[(1, 21398940), (2, 10699470), (3, 7132980), (4, 5349735), (5, 4279788), (6, 3566490), (9, 2377660), (10, 2139894), (12, 1783245), (15, 1426596), (18, 1188830), (19, 1126260), (20, 1069947), (30, 713298), (36, 594415), (38, 563130), (45, 475532), (57, 375420), (60, 356649), (76, 281565), (90, 237766), (95, 225252), (114, 187710), (171, 125140), (180, 118883), (190, 112626), (228, 93855), (285, 75084), (342, 62570), (380, 56313), (570, 37542), (684, 31285), (855, 25028), (1140, 18771), (1710, 12514), (3420, 6257)]