18990660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:373

約数の個数: 96

約数和(自身を含む): 58084992

約数和(自身を除く): 39094332

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 97, 130, 156, 194, 195, 251, 260, 291, 388, 390, 485, 502, 582, 753, 780, 970, 1004, 1164, 1255, 1261, 1455, 1506, 1940, 2510, 2522, 2910, 3012, 3263, 3765, 3783, 5020, 5044, 5820, 6305, 6526, 7530, 7566, 9789, 12610, 13052, 15060, 15132, 16315, 18915, 19578, 24347, 25220, 32630, 37830, 39156, 48694, 48945, 65260, 73041, 75660, 97388, 97890, 121735, 146082, 195780, 243470, 292164, 316511, 365205, 486940, 633022, 730410, 949533, 1266044, 1460820, 1582555, 1899066, 3165110, 3798132, 4747665, 6330220, 9495330, 18990660]

約数ペア:

[(1, 18990660), (2, 9495330), (3, 6330220), (4, 4747665), (5, 3798132), (6, 3165110), (10, 1899066), (12, 1582555), (13, 1460820), (15, 1266044), (20, 949533), (26, 730410), (30, 633022), (39, 486940), (52, 365205), (60, 316511), (65, 292164), (78, 243470), (97, 195780), (130, 146082), (156, 121735), (194, 97890), (195, 97388), (251, 75660), (260, 73041), (291, 65260), (388, 48945), (390, 48694), (485, 39156), (502, 37830), (582, 32630), (753, 25220), (780, 24347), (970, 19578), (1004, 18915), (1164, 16315), (1255, 15132), (1261, 15060), (1455, 13052), (1506, 12610), (1940, 9789), (2510, 7566), (2522, 7530), (2910, 6526), (3012, 6305), (3263, 5820), (3765, 5044), (3783, 5020)]