20981586

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^2$

素因数の和:199

約数の個数: 48

約数和(自身を含む): 45934560

約数和(自身を除く): 24952974

約数列:

[1, 2, 3, 6, 19, 38, 41, 57, 67, 82, 114, 123, 134, 201, 246, 402, 779, 1273, 1558, 2337, 2546, 2747, 3819, 4489, 4674, 5494, 7638, 8241, 8978, 13467, 16482, 26934, 52193, 85291, 104386, 156579, 170582, 184049, 255873, 313158, 368098, 511746, 552147, 1104294, 3496931, 6993862, 10490793, 20981586]

約数ペア:

[(1, 20981586), (2, 10490793), (3, 6993862), (6, 3496931), (19, 1104294), (38, 552147), (41, 511746), (57, 368098), (67, 313158), (82, 255873), (114, 184049), (123, 170582), (134, 156579), (201, 104386), (246, 85291), (402, 52193), (779, 26934), (1273, 16482), (1558, 13467), (2337, 8978), (2546, 8241), (2747, 7638), (3819, 5494), (4489, 4674)]