81811758

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{653}}^1$

素因数の和:841

約数の個数: 64

約数和(自身を含む): 198397440

約数和(自身を除く): 116585682

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 157, 266, 314, 399, 471, 653, 798, 942, 1099, 1306, 1959, 2198, 2983, 3297, 3918, 4571, 5966, 6594, 8949, 9142, 12407, 13713, 17898, 20881, 24814, 27426, 37221, 41762, 62643, 74442, 86849, 102521, 125286, 173698, 205042, 260547, 307563, 521094, 615126, 717647, 1435294, 1947899, 2152941, 3895798, 4305882, 5843697, 11687394, 13635293, 27270586, 40905879, 81811758]

約数ペア:

[(1, 81811758), (2, 40905879), (3, 27270586), (6, 13635293), (7, 11687394), (14, 5843697), (19, 4305882), (21, 3895798), (38, 2152941), (42, 1947899), (57, 1435294), (114, 717647), (133, 615126), (157, 521094), (266, 307563), (314, 260547), (399, 205042), (471, 173698), (653, 125286), (798, 102521), (942, 86849), (1099, 74442), (1306, 62643), (1959, 41762), (2198, 37221), (2983, 27426), (3297, 24814), (3918, 20881), (4571, 17898), (5966, 13713), (6594, 12407), (8949, 9142)]