20961510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1787}}^1$

素因数の和:1837

約数の個数: 64

約数和(自身を含む): 55613952

約数和(自身を除く): 34652442

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 23, 30, 34, 46, 51, 69, 85, 102, 115, 138, 170, 230, 255, 345, 391, 510, 690, 782, 1173, 1787, 1955, 2346, 3574, 3910, 5361, 5865, 8935, 10722, 11730, 17870, 26805, 30379, 41101, 53610, 60758, 82202, 91137, 123303, 151895, 182274, 205505, 246606, 303790, 411010, 455685, 616515, 698717, 911370, 1233030, 1397434, 2096151, 3493585, 4192302, 6987170, 10480755, 20961510]

約数ペア:

[(1, 20961510), (2, 10480755), (3, 6987170), (5, 4192302), (6, 3493585), (10, 2096151), (15, 1397434), (17, 1233030), (23, 911370), (30, 698717), (34, 616515), (46, 455685), (51, 411010), (69, 303790), (85, 246606), (102, 205505), (115, 182274), (138, 151895), (170, 123303), (230, 91137), (255, 82202), (345, 60758), (391, 53610), (510, 41101), (690, 30379), (782, 26805), (1173, 17870), (1787, 11730), (1955, 10722), (2346, 8935), (3574, 5865), (3910, 5361)]