21401380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1069}}^1$

素因数の和:1109

約数の個数: 96

約数和(自身を含む): 60399360

約数和(自身を除く): 38997980

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 110, 130, 140, 143, 154, 182, 220, 260, 286, 308, 364, 385, 455, 572, 715, 770, 910, 1001, 1069, 1430, 1540, 1820, 2002, 2138, 2860, 4004, 4276, 5005, 5345, 7483, 10010, 10690, 11759, 13897, 14966, 20020, 21380, 23518, 27794, 29932, 37415, 47036, 55588, 58795, 69485, 74830, 82313, 97279, 117590, 138970, 149660, 152867, 164626, 194558, 235180, 277940, 305734, 329252, 389116, 411565, 486395, 611468, 764335, 823130, 972790, 1070069, 1528670, 1646260, 1945580, 2140138, 3057340, 4280276, 5350345, 10700690, 21401380]

約数ペア:

[(1, 21401380), (2, 10700690), (4, 5350345), (5, 4280276), (7, 3057340), (10, 2140138), (11, 1945580), (13, 1646260), (14, 1528670), (20, 1070069), (22, 972790), (26, 823130), (28, 764335), (35, 611468), (44, 486395), (52, 411565), (55, 389116), (65, 329252), (70, 305734), (77, 277940), (91, 235180), (110, 194558), (130, 164626), (140, 152867), (143, 149660), (154, 138970), (182, 117590), (220, 97279), (260, 82313), (286, 74830), (308, 69485), (364, 58795), (385, 55588), (455, 47036), (572, 37415), (715, 29932), (770, 27794), (910, 23518), (1001, 21380), (1069, 20020), (1430, 14966), (1540, 13897), (1820, 11759), (2002, 10690), (2138, 10010), (2860, 7483), (4004, 5345), (4276, 5005)]