20475756

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{421}}^1$

素因数の和:631

約数の個数: 72

約数和(自身を含む): 59599904

約数和(自身を除く): 39124148

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 193, 252, 386, 421, 579, 772, 842, 1158, 1263, 1351, 1684, 1737, 2316, 2526, 2702, 2947, 3474, 3789, 4053, 5052, 5404, 5894, 6948, 7578, 8106, 8841, 11788, 12159, 15156, 16212, 17682, 24318, 26523, 35364, 48636, 53046, 81253, 106092, 162506, 243759, 325012, 487518, 568771, 731277, 975036, 1137542, 1462554, 1706313, 2275084, 2925108, 3412626, 5118939, 6825252, 10237878, 20475756]

約数ペア:

[(1, 20475756), (2, 10237878), (3, 6825252), (4, 5118939), (6, 3412626), (7, 2925108), (9, 2275084), (12, 1706313), (14, 1462554), (18, 1137542), (21, 975036), (28, 731277), (36, 568771), (42, 487518), (63, 325012), (84, 243759), (126, 162506), (193, 106092), (252, 81253), (386, 53046), (421, 48636), (579, 35364), (772, 26523), (842, 24318), (1158, 17682), (1263, 16212), (1351, 15156), (1684, 12159), (1737, 11788), (2316, 8841), (2526, 8106), (2702, 7578), (2947, 6948), (3474, 5894), (3789, 5404), (4053, 5052)]